64456425 has 48 divisors (see below), whose sum is σ = 129188160. Its totient is φ = 31248000.

The previous prime is 64456393. The next prime is 64456433. The reversal of 64456425 is 52465446.

64456425 is a `hidden beast` number, since 6 + 4 + 4 + 5 + 642 + 5 = 666.

It is not a de Polignac number, because 64456425 - 2⁵ = 64456393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64456425.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3085 + ... + 11765.

It is an arithmetic number, because the mean of its divisors is an integer number (2691420).

Almost surely, 2^64456425 is an apocalyptic number.

It is an amenable number.

64456425 is an abundant number, since it is smaller than the sum of its proper divisors (64731735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64456425 is a wasteful number, since it uses less digits than its factorization.

64456425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8711 (or 8700 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 64456425 is about 8028.4758827563. The cubic root of 64456425 is about 400.9486338726.

The spelling of 64456425 in words is "sixty-four million, four hundred fifty-six thousand, four hundred twenty-five".