625504 has 24 divisors (see below), whose sum is σ = 1344168. Its totient is φ = 284160.

The previous prime is 625489. The next prime is 625507. The reversal of 625504 is 405526.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (56007).

2⁶²⁵⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

625504 is an abundant number, since it is smaller than the sum of its proper divisors (718664).

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

625504 is a wasteful number, since it uses less digits than its factorization.

625504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 625504 is about 790.8881083946. Note that the first 3 decimals coincide. The cubic root of 625504 is about 85.5217732357.

Adding to 625504 its sum of digits (22), we get a palindrome (625526).

The spelling of 625504 in words is "six hundred twenty-five thousand, five hundred four".