625604400 has 90 divisors (see below), whose sum is σ = 2171033540. Its totient is φ = 166826880.

The previous prime is 625604381. The next prime is 625604411. The reversal of 625604400 is 4406526.

It is a happy number.

625604400 is a `hidden beast` number, since 6 + 256 + 0 + 4 + 400 = 666.

625604400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (90).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 83290 + ... + 90489.

Almost surely, 2^625604400 is an apocalyptic number.

625604400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

625604400 is an abundant number, since it is smaller than the sum of its proper divisors (1545429140).

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

625604400 is a wasteful number, since it uses less digits than its factorization.

625604400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173803 (or 173789 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 625604400 is about 25012.0850790173. The cubic root of 625604400 is about 855.2634870697.

The spelling of 625604400 in words is "six hundred twenty-five million, six hundred four thousand, four hundred".