# 390625

## 390,625 is an odd composite number. It is composed of a single prime number multiplied by itself seven times.

What does the number 390625 look like?

This visualization shows the relationship between its 1 prime factors (large circles) and 9 divisors.

390625 is an odd composite number. It is composed of one distinct prime number multiplied by itself seven times. It has a total of nine divisors.

## Prime factorization of 390625:

### 58

(5 × 5 × 5 × 5 × 5 × 5 × 5 × 5)

See below for interesting mathematical facts about the number 390625 from the Numbermatics database.

### Names of 390625

• Cardinal: 390625 can be written as Three hundred ninety thousand, six hundred twenty-five.

### Scientific notation

• Scientific notation: 3.90625 × 105

### Factors of 390625

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5

### Divisors of 390625

• Number of divisors d(n): 9
• Complete list of divisors:
• Sum of all divisors σ(n): 488281
• Sum of proper divisors (its aliquot sum) s(n): 97656
• 390625 is a deficient number, because the sum of its proper divisors (97656) is less than itself. Its deficiency is 292969

### Bases of 390625

• Binary: 10111110101111000012
• Base-36: 8DEP

### Squares and roots of 390625

• 390625 squared (3906252) is 152587890625
• 390625 cubed (3906253) is 59604644775390625
• 390625 is a perfect square number. Its square root is 625
• The cube root of 390625 is 73.1004434553

### Scales and comparisons

How big is 390625?
• 390,625 seconds is equal to 4 days, 12 hours, 30 minutes, 25 seconds.
• To count from 1 to 390,625 would take you about four days.

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 390625 cubic inches would be around 6.1 feet tall.

### Recreational maths with 390625

• 390625 backwards is 526093
• 390625 is a Harshad number.
• The number of decimal digits it has is: 6
• The sum of 390625's digits is 25
• More coming soon!