656461825 has 12 divisors (see below), whose sum is σ = 817669888. Its totient is φ = 522810000.

The previous prime is 656461787. The next prime is 656461847. The reversal of 656461825 is 528164656.

It is not a de Polignac number, because 656461825 - 2⁷ = 656461697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53301 + ... + 64450.

Almost surely, 2^656461825 is an apocalyptic number.

It is an amenable number.

656461825 is a deficient number, since it is larger than the sum of its proper divisors (161208063).

656461825 is a wasteful number, since it uses less digits than its factorization.

656461825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117984 (or 117979 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 656461825 is about 25621.5109819854. The cubic root of 656461825 is about 869.1001507627.

The spelling of 656461825 in words is "six hundred fifty-six million, four hundred sixty-one thousand, eight hundred twenty-five".