256056065 has 16 divisors (see below), whose sum is σ = 324408000. Its totient is φ = 193482432.

The previous prime is 256056061. The next prime is 256056107. The reversal of 256056065 is 560650652.

It is a cyclic number.

It is not a de Polignac number, because 256056065 - 2² = 256056061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256056061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29294 + ... + 37016.

It is an arithmetic number, because the mean of its divisors is an integer number (20275500).

Almost surely, 2^256056065 is an apocalyptic number.

It is an amenable number.

256056065 is a deficient number, since it is larger than the sum of its proper divisors (68351935).

256056065 is a wasteful number, since it uses less digits than its factorization.

256056065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 256056065 is about 16001.7519353351. The cubic root of 256056065 is about 635.0067703414.

The spelling of 256056065 in words is "two hundred fifty-six million, fifty-six thousand, sixty-five".