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13,825

13,825 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.).
Deficient Number Happy Number Odious Number Pernicious Number Recamán's Sequence

Properties

Parity
Odd
Digit count
5
Digit sum
19
Digit product
240
Digital root
1
Palindrome
No
Bit width
14 bits
Reversed
52,831
Recamán's sequence
a(21,066) = 13,825
Square (n²)
191,130,625
Cube (n³)
2,642,380,890,625
Divisor count
12
σ(n) — sum of divisors
19,840
φ(n) — Euler's totient
9,360
Sum of prime factors
96

Primality

Prime factorization: 5 2 × 7 × 79

Nearest primes: 13,807 (−18) · 13,829 (+4)

Divisors & multiples

All divisors (12)
1 · 5 · 7 · 25 · 35 · 79 · 175 · 395 · 553 · 1975 · 2765 · 13825
Aliquot sum (sum of proper divisors): 6,015
Factor pairs (a × b = 13,825)
1 × 13825
5 × 2765
7 × 1975
25 × 553
35 × 395
79 × 175
First multiples
13,825 · 27,650 (double) · 41,475 · 55,300 · 69,125 · 82,950 · 96,775 · 110,600 · 124,425 · 138,250

Sums & aliquot sequence

As consecutive integers: 6,912 + 6,913 2,763 + 2,764 + 2,765 + 2,766 + 2,767 1,972 + 1,973 + … + 1,978 1,378 + 1,379 + … + 1,387
Aliquot sequence: 13,825 6,015 3,633 1,935 1,497 503 1 0 — terminates at zero

Representations

In words
thirteen thousand eight hundred twenty-five
Ordinal
13825th
Binary
11011000000001
Octal
33001
Hexadecimal
0x3601
Base64
NgE=
One's complement
51,710 (16-bit)
In other bases
ternary (3) 200222001
quaternary (4) 3120001
quinary (5) 420300
senary (6) 144001
septenary (7) 55210
nonary (9) 20861
undecimal (11) a429
duodecimal (12) 8001
tridecimal (13) 63a6
tetradecimal (14) 5077
pentadecimal (15) 416a

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιγωκεʹ
Mayan (base 20)
𝋡·𝋮·𝋫·𝋥
Chinese
一萬三千八百二十五
Chinese (financial)
壹萬參仟捌佰貳拾伍
In other modern scripts
Eastern Arabic ١٣٨٢٥ Devanagari १३८२५ Bengali ১৩৮২৫ Tamil ௧௩௮௨௫ Thai ๑๓๘๒๕ Tibetan ༡༣༨༢༥ Khmer ១៣៨២៥ Lao ໑໓໘໒໕ Burmese ၁၃၈၂၅

Digit at this position in famous constants

π — Pi (π)
Digit 13,825 = 4
e — Euler's number (e)
Digit 13,825 = 4
φ — Golden ratio (φ)
Digit 13,825 = 7
√2 — Pythagoras's (√2)
Digit 13,825 = 9
ln 2 — Natural log of 2
Digit 13,825 = 9
γ — Euler-Mascheroni (γ)
Digit 13,825 = 5

Also seen as

Unicode codepoint
CJK Unified Ideograph-3601
U+3601
Other letter (Lo)

UTF-8 encoding: E3 98 81 (3 bytes).

Hex color
#003601
RGB(0, 54, 1)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.1.

Address
0.0.54.1
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.54.1

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

Position in π

The digit sequence 13825 first appears in π at position 61,285 of the decimal expansion (the 61,285ordinal-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.