656443425 has 48 divisors (see below), whose sum is σ = 1206404928. Its totient is φ = 312249600.

The previous prime is 656443399. The next prime is 656443427. The reversal of 656443425 is 524344656.

It is not a de Polignac number, because 656443425 - 2⁷ = 656443297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656443427) 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, 36219 + ... + 51231.

It is an arithmetic number, because the mean of its divisors is an integer number (25133436).

Almost surely, 2^656443425 is an apocalyptic number.

It is an amenable number.

656443425 is a deficient number, since it is larger than the sum of its proper divisors (549961503).

656443425 is a wasteful number, since it uses less digits than its factorization.

656443425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15090 (or 15085 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

The square root of 656443425 is about 25621.1519061888. The cubic root of 656443425 is about 869.0920306702.

The spelling of 656443425 in words is "six hundred fifty-six million, four hundred forty-three thousand, four hundred twenty-five".