625331 has 8 divisors (see below), whose sum is σ = 720480. Its totient is φ = 531648.

The previous prime is 625319. The next prime is 625343. The reversal of 625331 is 133526.

625331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (625319) and next prime (625343).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 625331 - 2⁶ = 625267 is a prime.

It is a super-2 number, since 2×625331² = 782077719122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (90060).

2⁶²⁵³³¹ is an apocalyptic number.

625331 is a deficient number, since it is larger than the sum of its proper divisors (95149).

625331 is a wasteful number, since it uses less digits than its factorization.

625331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its digits is 540, while the sum is 20.

The square root of 625331 is about 790.7787301136. The cubic root of 625331 is about 85.5138880578.

Adding to 625331 its reverse (133526), we get a palindrome (758857).

The spelling of 625331 in words is "six hundred twenty-five thousand, three hundred thirty-one".