# 25

## 25 is an odd composite number. It is composed of a single prime number multiplied by itself.

What does the number 25 look like?

This visualization shows the relationship between its 1 prime factors (large circles) and 3 divisors.

25 is an odd composite number. It has a total of three divisors.

## Prime factorization of 25:

### 52

(5 × 5)

See below for interesting mathematical facts about the number 25 from the Numbermatics database.

### Names of 25

• Cardinal: 25 can be written as Twenty-five.

### Scientific notation

• Scientific notation: 2.5 × 101

### Factors of 25

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 5

### Divisors of 25

• Number of divisors d(n): 3
• Complete list of divisors:
• Sum of all divisors σ(n): 31
• Sum of proper divisors (its aliquot sum) s(n): 6
• 25 is a deficient number, because the sum of its proper divisors (6) is less than itself. Its deficiency is 19

### Bases of 25

• Binary: 110012
• Base-36: P

### Squares and roots of 25

• 25 squared (252) is 625
• 25 cubed (253) is 15625
• 25 is a perfect square number. Its square root is 5
• The cube root of 25 is 2.9240177383

### Scales and comparisons

How big is 25?
• A cube with a volume of 25 cubic inches would be around 0.2 feet tall.

### Recreational maths with 25

• 25 backwards is 52
• The number of decimal digits it has is: 2
• The sum of 25's digits is 7
• More coming soon!