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25,920

25,920 is a composite number, even.

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.).
Abundant Number Harshad / Niven

Properties

Parity
Even
Digit count
5
Digit sum
18
Digital root
9
Palindrome
No
Divisor count
70
σ(n) — sum of divisors
92,202

Primality

Prime factorization: 2 6 × 3 4 × 5

Divisors & multiples

All divisors (70)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 9 · 10 · 12 · 15 · 16 · 18 · 20 · 24 · 27 · 30 · 32 · 36 · 40 · 45 · 48 · 54 · 60 · 64 · 72 · 80 · 81 · 90 · 96 · 108 · 120 · 135 · 144 · 160 · 162 · 180 · 192 · 216 · 240 · 270 · 288 · 320 · 324 · 360 · 405 · 432 · 480 · 540 · 576 · 648 · 720 · 810 · 864 · 960 · 1080 · 1296 · 1440 · 1620 · 1728 · 2160 · 2592 · 2880 · 3240 · 4320 · 5184 · 6480 · 8640 · 12960 · 25920
Aliquot sum (sum of proper divisors): 66,282
Factor pairs (a × b = 25,920)
1 × 25920
2 × 12960
3 × 8640
4 × 6480
5 × 5184
6 × 4320
8 × 3240
9 × 2880
10 × 2592
12 × 2160
15 × 1728
16 × 1620
18 × 1440
20 × 1296
24 × 1080
27 × 960
30 × 864
32 × 810
36 × 720
40 × 648
45 × 576
48 × 540
54 × 480
60 × 432
64 × 405
72 × 360
80 × 324
81 × 320
90 × 288
96 × 270
108 × 240
120 × 216
135 × 192
144 × 180
160 × 162
First multiples
25,920 · 51,840 · 77,760 · 103,680 · 129,600 · 155,520 · 181,440 · 207,360 · 233,280 · 259,200

Representations

In words
twenty-five thousand nine hundred twenty
Ordinal
25920th
Binary
110010101000000
Octal
62500
Hexadecimal
6540

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 25920, here are decompositions:

  • 7 + 25913 = 25920
  • 17 + 25903 = 25920
  • 31 + 25889 = 25920
  • 47 + 25873 = 25920
  • 53 + 25867 = 25920
  • 71 + 25849 = 25920
  • 73 + 25847 = 25920
  • 79 + 25841 = 25920

Showing the first eight; more decompositions exist.

Unicode codepoint
U+6540
Other letter (Lo)

UTF-8 encoding: E6 95 80 (3 bytes).

Hex color
#006540
RGB(0, 101, 64)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.101.64.

Possible US bank routing number

This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.

Routing number
000025920
Federal Reserve
United States Government

Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.