655725625 has 20 divisors (see below), whose sum is σ = 862536400. Its totient is φ = 496962000.

The previous prime is 655725617. The next prime is 655725643. The reversal of 655725625 is 526527556.

It is not a de Polignac number, because 655725625 - 2³ = 655725617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15735 + ... + 39484.

It is an arithmetic number, because the mean of its divisors is an integer number (43126820).

Almost surely, 2^655725625 is an apocalyptic number.

It is an amenable number.

655725625 is a deficient number, since it is larger than the sum of its proper divisors (206810775).

655725625 is an equidigital number, since it uses as much as digits as its factorization.

655725625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55258 (or 55243 counting only the distinct ones).

The product of its digits is 630000, while the sum is 43.

The square root of 655725625 is about 25607.1401175532. The cubic root of 655725625 is about 868.7751403107.

The spelling of 655725625 in words is "six hundred fifty-five million, seven hundred twenty-five thousand, six hundred twenty-five".