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2,125

2,125 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Arithmetic Number Deficient Number Gapful Number Nonagonal Odious Number Pernicious Number Recamán's Sequence

Properties

Parity
Odd
Digit count
4
Digit sum
10
Digit product
20
Digital root
1
Palindrome
No
Bit width
12 bits
Reversed
5,212
Recamán's sequence
a(3,501) = 2,125
Square (n²)
4,515,625
Cube (n³)
9,595,703,125
Divisor count
8
σ(n) — sum of divisors
2,808
φ(n) — Euler's totient
1,600
Sum of prime factors
32

Primality

Prime factorization: 5 3 × 17

Nearest primes: 2,113 (−12) · 2,129 (+4)

Divisors & multiples

All divisors (8)
1 · 5 · 17 · 25 · 85 · 125 · 425 · 2125
Aliquot sum (sum of proper divisors): 683
Factor pairs (a × b = 2,125)
1 × 2125
5 × 425
17 × 125
25 × 85
First multiples
2,125 · 4,250 (double) · 6,375 · 8,500 · 10,625 · 12,750 · 14,875 · 17,000 · 19,125 · 21,250

Sums & aliquot sequence

As a sum of two squares: 3² + 46² = 10² + 45² = 19² + 42² = 30² + 35²
As consecutive integers: 1,062 + 1,063 423 + 424 + 425 + 426 + 427 208 + 209 + … + 217 117 + 118 + … + 133
Aliquot sequence: 2,125 683 1 0 — terminates at zero

Representations

In words
two thousand one hundred twenty-five
Ordinal
2125th
Roman numeral
MMCXXV
Binary
100001001101
Octal
4115
Hexadecimal
0x84D
Base64
CE0=
One's complement
63,410 (16-bit)
In other bases
ternary (3) 2220201
quaternary (4) 201031
quinary (5) 32000
senary (6) 13501
septenary (7) 6124
nonary (9) 2821
undecimal (11) 1662
duodecimal (12) 1291
tridecimal (13) c76
tetradecimal (14) abb
pentadecimal (15) 96a

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵βρκεʹ
Mayan (base 20)
𝋥·𝋦·𝋥
Chinese
二千一百二十五
Chinese (financial)
貳仟壹佰貳拾伍
In other modern scripts
Eastern Arabic ٢١٢٥ Devanagari २१२५ Bengali ২১২৫ Tamil ௨௧௨௫ Thai ๒๑๒๕ Tibetan ༢༡༢༥ Khmer ២១២៥ Lao ໒໑໒໕ Burmese ၂၁၂၅

Digit at this position in famous constants

π — Pi (π)
Digit 2,125 = 9
e — Euler's number (e)
Digit 2,125 = 0
φ — Golden ratio (φ)
Digit 2,125 = 4
√2 — Pythagoras's (√2)
Digit 2,125 = 9
ln 2 — Natural log of 2
Digit 2,125 = 9
γ — Euler-Mascheroni (γ)
Digit 2,125 = 4

Also seen as

Unicode codepoint
Mandaic Letter An
U+084D
Other letter (Lo)

UTF-8 encoding: E0 A1 8D (3 bytes).

Hex color
#00084D
RGB(0, 8, 77)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.8.77.

Address
0.0.8.77
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.8.77

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

Position in π

The digit sequence 2125 first appears in π at position 6,557 of the decimal expansion (the 6,557ordinal-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.