64025644 has 12 divisors (see below), whose sum is σ = 112224168. Its totient is φ = 31961600.

The previous prime is 64025623. The next prime is 64025657. The reversal of 64025644 is 44652046.

64025644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64025644² = 8198566179229472, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 9922 + ... + 15049.

It is an arithmetic number, because the mean of its divisors is an integer number (9352014).

Almost surely, 2^64025644 is an apocalyptic number.

It is an amenable number.

64025644 is a deficient number, since it is larger than the sum of its proper divisors (48198524).

64025644 is a wasteful number, since it uses less digits than its factorization.

64025644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25616 (or 25614 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 64025644 is about 8001.6025894817. The cubic root of 64025644 is about 400.0534178660.

The spelling of 64025644 in words is "sixty-four million, twenty-five thousand, six hundred forty-four".