655209625 has 48 divisors (see below), whose sum is σ = 992774016. Its totient is φ = 429660000.

The previous prime is 655209613. The next prime is 655209629. The reversal of 655209625 is 526902556.

It is a happy number.

655209625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655209625 - 2⁷ = 655209497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655209629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138550 + ... + 143200.

It is an arithmetic number, because the mean of its divisors is an integer number (20682792).

Almost surely, 2^655209625 is an apocalyptic number.

It is an amenable number.

655209625 is a deficient number, since it is larger than the sum of its proper divisors (337564391).

655209625 is a wasteful number, since it uses less digits than its factorization.

655209625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703 (or 4686 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 655209625 is about 25597.0628197846. The cubic root of 655209625 is about 868.5471965922.

The spelling of 655209625 in words is "six hundred fifty-five million, two hundred nine thousand, six hundred twenty-five".