256085164 has 6 divisors (see below), whose sum is σ = 448149044. Its totient is φ = 128042580.

The previous prime is 256085149. The next prime is 256085171. The reversal of 256085164 is 461580652.

256085164 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 2×256085164² = 131159222441813792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32010642 + ... + 32010649.

Almost surely, 2^256085164 is an apocalyptic number.

It is an amenable number.

256085164 is a deficient number, since it is larger than the sum of its proper divisors (192063880).

256085164 is a wasteful number, since it uses less digits than its factorization.

256085164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64021295 (or 64021293 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 256085164 is about 16002.6611536957. The cubic root of 256085164 is about 635.0308241387.

The spelling of 256085164 in words is "two hundred fifty-six million, eighty-five thousand, one hundred sixty-four".