625604 has 12 divisors (see below), whose sum is σ = 1251264. Its totient is φ = 268104.

The previous prime is 625591. The next prime is 625609. The reversal of 625604 is 406526.

625604 is an admirable number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 625604.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625604.

It is not an unprimeable number, because it can be changed into a prime (625609) by changing a digit.

625604 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11144 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (104272).

2⁶²⁵⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

625604 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625604 is a wasteful number, since it uses less digits than its factorization.

625604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22354 (or 22352 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 625604 is about 790.9513259361. The cubic root of 625604 is about 85.5263304790.

The spelling of 625604 in words is "six hundred twenty-five thousand, six hundred four".