625583728 has 40 divisors (see below), whose sum is σ = 1511153280. Its totient is φ = 243733440.

The previous prime is 625583719. The next prime is 625583729. The reversal of 625583728 is 827385526.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625583729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252658 + ... + 255121.

It is an arithmetic number, because the mean of its divisors is an integer number (37778832).

Almost surely, 2^625583728 is an apocalyptic number.

It is an amenable number.

625583728 is an abundant number, since it is smaller than the sum of its proper divisors (885569552).

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

625583728 is a wasteful number, since it uses less digits than its factorization.

625583728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507805 (or 507799 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 625583728 is about 25011.6718353652. The cubic root of 625583728 is about 855.2540667388.

The spelling of 625583728 in words is "six hundred twenty-five million, five hundred eighty-three thousand, seven hundred twenty-eight".