# 625

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

What does the number 625 look like?

This visualization shows the relationship between its 1 prime factors (large circles) and 5 divisors.

625 is an odd composite number. It is composed of one distinct prime number multiplied by itself three times. It has a total of five divisors.

## Prime factorization of 625:

### 54

(5 × 5 × 5 × 5)

See below for interesting mathematical facts about the number 625 from the Numbermatics database.

### Names of 625

• Cardinal: 625 can be written as Six hundred twenty-five.

### Scientific notation

• Scientific notation: 6.25 × 102

### Factors of 625

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 5

### Divisors of 625

• Number of divisors d(n): 5
• Complete list of divisors:
• Sum of all divisors σ(n): 781
• Sum of proper divisors (its aliquot sum) s(n): 156
• 625 is a deficient number, because the sum of its proper divisors (156) is less than itself. Its deficiency is 469

### Bases of 625

• Binary: 10011100012
• Base-36: HD

### Squares and roots of 625

• 625 squared (6252) is 390625
• 625 cubed (6253) is 244140625
• 625 is a perfect square number. Its square root is 25
• The cube root of 625 is 8.5498797333

### Scales and comparisons

How big is 625?
• 625 seconds is equal to 10 minutes, 25 seconds.
• To count from 1 to 625 would take you about five minutes.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 625 cubic inches would be around 0.7 feet tall.

### Recreational maths with 625

• 625 backwards is 526
• The number of decimal digits it has is: 3
• The sum of 625's digits is 13
• More coming soon!