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Number

1,250

1,250 is a composite number, even, a calendar year.

Deficient Number Gapful Number Odious Number Pernicious Number Recamán's Sequence Year

Historical context — 1250 AD

Calendar year

Year 1250 (MCCL) was a common year starting on Saturday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Year facts

Year type
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year
365
ISO weeks
52
Started on
Saturday
January 1, 1250
Ended on
Saturday
December 31, 1250
Friday the 13ths
1
One Friday the 13th this year.
Decade
1250s
1250–1259
Century
13th century
1201–1300
Millennium
2nd millennium
1001–2000
Years ago
776
776 years before 2026.

In other calendars

Hebrew
5010 / 5011 AM
Rosh Hashanah falls in September/October.
Islamic Hijri
647 / 648 AH
Lunar calendar; year spans differ from Gregorian.
Chinese
Year of the zodiac:Metal zodiac:Dog
Sexagenary cycle position 47 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era
1793 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri
628 / 629 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian
1242 / 1243 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka)
1172 / 1171 Saka
Indian national calendar; year starts in March.

Properties

Parity
Even
Digit count
4
Digit sum
8
Digit product
0
Digital root
8
Palindrome
No
Bit width
11 bits
Reversed
521
Recamán's sequence
a(8,488) = 1,250
Square (n²)
1,562,500
Cube (n³)
1,953,125,000
Divisor count
10
σ(n) — sum of divisors
2,343
φ(n) — Euler's totient
500
Sum of prime factors
22

Primality

Prime factorization: 2 × 5 4

Nearest primes: 1,249 (−1) · 1,259 (+9)

Divisors & multiples

All divisors (10)
1 · 2 · 5 · 10 · 25 · 50 · 125 · 250 · 625 (half) · 1250
Aliquot sum (sum of proper divisors): 1,093
Factor pairs (a × b = 1,250)
1 × 1250
2 × 625
5 × 250
10 × 125
25 × 50
First multiples
1,250 · 2,500 (double) · 3,750 · 5,000 · 6,250 · 7,500 · 8,750 · 10,000 · 11,250 · 12,500

Sums & aliquot sequence

As a sum of two squares: 5² + 35² = 17² + 31² = 25² + 25²
As consecutive integers: 311 + 312 + 313 + 314 248 + 249 + 250 + 251 + 252 53 + 54 + … + 72 38 + 39 + … + 62
Aliquot sequence: 1,250 1,093 1 0 — terminates at zero

Representations

In words
one thousand two hundred fifty
Ordinal
1250th
Roman numeral
MCCL
Binary
10011100010
Octal
2342
Hexadecimal
0x4E2
Base64
BOI=
One's complement
64,285 (16-bit)
In other bases
ternary (3) 1201022
quaternary (4) 103202
quinary (5) 20000
senary (6) 5442
septenary (7) 3434
nonary (9) 1638
undecimal (11) a37
duodecimal (12) 882
tridecimal (13) 752
tetradecimal (14) 654
pentadecimal (15) 585

Historical numeral systems

Babylonian (base 60)
𒌋𒌋 𒌋𒌋𒌋𒌋𒌋
Egyptian hieroglyphic
𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆
Greek (Milesian)
͵ασνʹ
Mayan (base 20)
𝋣·𝋢·𝋪
Chinese
一千二百五十
Chinese (financial)
壹仟貳佰伍拾
In other modern scripts
Eastern Arabic ١٢٥٠ Devanagari १२५० Bengali ১২৫০ Tamil ௧௨௫௦ Thai ๑๒๕๐ Tibetan ༡༢༥༠ Khmer ១២៥០ Lao ໑໒໕໐ Burmese ၁၂၅၀

Digit at this position in famous constants

π — Pi (π)
Digit 1,250 = 4
e — Euler's number (e)
Digit 1,250 = 5
φ — Golden ratio (φ)
Digit 1,250 = 3
√2 — Pythagoras's (√2)
Digit 1,250 = 9
ln 2 — Natural log of 2
Digit 1,250 = 0
γ — Euler-Mascheroni (γ)
Digit 1,250 = 8

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1250, here are decompositions:

  • 13 + 1237 = 1250
  • 19 + 1231 = 1250
  • 37 + 1213 = 1250
  • 79 + 1171 = 1250
  • 97 + 1153 = 1250
  • 127 + 1123 = 1250
  • 157 + 1093 = 1250
  • 163 + 1087 = 1250

Showing the first eight; more decompositions exist.

Unicode codepoint
Ӣ
Cyrillic Capital Letter I With Macron
U+04E2
Uppercase letter (Lu)

UTF-8 encoding: D3 A2 (2 bytes).

Code page identifier

Code page 1250 is Windows-1250 (Central European) — Microsoft Windows encoding for Central European languages.

Code pages are integer identifiers used by Windows and other systems to refer to specific character encodings.

Hex color
#0004E2
RGB(0, 4, 226)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.226.

Address
0.0.4.226
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.4.226

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 1250 first appears in π at position 6,558 of the decimal expansion (the 6,558ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.