64656425 has 12 divisors (see below), whose sum is σ = 80288016. Its totient is φ = 51651600.

The previous prime is 64656413. The next prime is 64656433. The reversal of 64656425 is 52465646.

64656425 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 64656425 - 2⁸ = 64656169 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22310 + ... + 25040.

It is an arithmetic number, because the mean of its divisors is an integer number (6690668).

Almost surely, 2^64656425 is an apocalyptic number.

It is an amenable number.

64656425 is a deficient number, since it is larger than the sum of its proper divisors (15631591).

64656425 is a wasteful number, since it uses less digits than its factorization.

64656425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688 (or 3683 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 64656425 is about 8040.9218998819. The cubic root of 64656425 is about 401.3629030474.

The spelling of 64656425 in words is "sixty-four million, six hundred fifty-six thousand, four hundred twenty-five".