Number
225
225 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 9
- Digital root
- 9
- Palindrome
- No
- Divisor count
- 9
- σ(n) — sum of divisors
- 403
Primality
Prime factorization: 3 2 × 5 2
Divisors & multiples
Aliquot sum (sum of proper divisors):
178
Representations
- In words
- two hundred twenty-five
- Ordinal
- 225th
- Roman numeral
- CCXXV
- Binary
- 11100001
- Octal
- 341
- Hexadecimal
- E1
Also seen as
Unicode codepoint
á
U+00E1
Lowercase letter (Ll)
UTF-8 encoding: C3 A1 (2 bytes).
Hex color
#0000E1
RGB(0, 0, 225)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.225.