625625625 has 20 divisors (see below), whose sum is σ = 1042378832. Its totient is φ = 333666000.

The previous prime is 625625591. The next prime is 625625629. The reversal of 625625625 is 526526526.

It is not a de Polignac number, because 625625625 - 2⁹ = 625625113 is a prime.

It is a Duffinian number.

625625625 is a modest number, since divided by 625625 gives 625 as remainder.

It is not an unprimeable number, because it can be changed into a prime (625625629) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 164959 + ... + 168708.

Almost surely, 2^625625625 is an apocalyptic number.

It is an amenable number.

625625625 is a deficient number, since it is larger than the sum of its proper divisors (416753207).

625625625 is an equidigital number, since it uses as much as digits as its factorization.

625625625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333690 (or 333675 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 625625625 is about 25012.5093703131. The cubic root of 625625625 is about 855.2731591896.

Subtracting from 625625625 its reverse (526526526), we obtain a palindrome (99099099).

The spelling of 625625625 in words is "six hundred twenty-five million, six hundred twenty-five thousand, six hundred twenty-five".