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2,500

2,500 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 Perfect Square Powerful Number

Properties

Parity
Even
Digit count
4
Digit sum
7
Digital root
7
Palindrome
No
Divisor count
15
σ(n) — sum of divisors
5,467

Primality

Prime factorization: 2 2 × 5 4

Divisors & multiples

All divisors (15)
1 · 2 · 4 · 5 · 10 · 20 · 25 · 50 · 100 · 125 · 250 · 500 · 625 · 1250 · 2500
Aliquot sum (sum of proper divisors): 2,967
Factor pairs (a × b = 2,500)
1 × 2500
2 × 1250
4 × 625
5 × 500
10 × 250
20 × 125
25 × 100
50 × 50
First multiples
2,500 · 5,000 · 7,500 · 10,000 · 12,500 · 15,000 · 17,500 · 20,000 · 22,500 · 25,000

Representations

In words
two thousand five hundred
Ordinal
2500th
Roman numeral
MMD
Binary
100111000100
Octal
4704
Hexadecimal
9C4

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2500, here are decompositions:

  • 23 + 2477 = 2500
  • 41 + 2459 = 2500
  • 53 + 2447 = 2500
  • 59 + 2441 = 2500
  • 83 + 2417 = 2500
  • 89 + 2411 = 2500
  • 101 + 2399 = 2500
  • 107 + 2393 = 2500

Showing the first eight; more decompositions exist.

Unicode codepoint
U+09C4
Non-spacing mark (Mn)

UTF-8 encoding: E0 A7 84 (3 bytes).

Hex color
#0009C4
RGB(0, 9, 196)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.9.196.