# 25440

## 25,440 is an even composite number composed of four prime numbers multiplied together.

What does the number 25440 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

25440 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

## Prime factorization of 25440:

### 25 × 3 × 5 × 53

(2 × 2 × 2 × 2 × 2 × 3 × 5 × 53)

See below for interesting mathematical facts about the number 25440 from the Numbermatics database.

### Names of 25440

• Cardinal: 25440 can be written as Twenty-five thousand, four hundred forty.

### Scientific notation

• Scientific notation: 2.544 × 104

### Factors of 25440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 63

### Divisors of 25440

• Number of divisors d(n): 48
• Complete list of divisors:
• Sum of all divisors σ(n): 81648
• Sum of proper divisors (its aliquot sum) s(n): 56208
• 25440 is an abundant number, because the sum of its proper divisors (56208) is greater than itself. Its abundance is 30768

### Bases of 25440

• Binary: 1100011011000002
• Base-36: JMO

### Squares and roots of 25440

• 25440 squared (254402) is 647193600
• 25440 cubed (254403) is 16464605184000
• The square root of 25440 is 159.4992162991
• The cube root of 25440 is 29.4107231003

### Scales and comparisons

How big is 25440?
• 25,440 seconds is equal to 7 hours, 4 minutes.
• To count from 1 to 25,440 would take you about seven hours.

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 25440 cubic inches would be around 2.5 feet tall.

### Recreational maths with 25440

• 25440 backwards is 04452
• 25440 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 25440's digits is 15
• More coming soon!