The Natural Number 25

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Properties of the Number 25

  • Because 25 is not divisible by 2 ...
    • 25 is an odd number
    • 25 has parity 1
    • 25 is not an even number
  • Because 25 can be factored as 5 x 5 ...
    • 25 is a composite number
    • 25 is not a prime number

Alternative Representations of the Number 25

  • Base 2 (binary): 11001
  • Base 8 (octal): 31
  • Base 16 (hexadecimal): 19
  • Roman numeral: XXV
  • Words: twenty-five

Divisors of the Number 25

  • 25 has 3 positive divisors: 1, 5, 25
    • The sum of the positive divisors is 31
  • 25 has 2 proper divisors: 1, 5
    • The sum of the proper divisors is 6
  • 25 is a deficient number since the sum of the proper divisors is less than 25
  • 25 is not a perfect number
  • 25 is not an abundant number

More Properties of the Number 25

  • 25 is a square number (i.e., square of the natural number 5)
  • 25 is not a cube number
  • 25 is not a palindromic number
  • 25 is not a Fibonacci number
  • 25 is not a Lucas number

3:34 pm, Saturday, May 27, 2017 (UTC; +0000)
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