256166159 has 2 divisors, whose sum is σ = 256166160. Its totient is φ = 256166158.

The previous prime is 256166129. The next prime is 256166167. The reversal of 256166159 is 951661652.

256166159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256166159 - 2²⁴ = 239388943 is a prime.

It is a super-2 number, since 2×256166159² = 131242202033626562, which contains 22 as substring.

It is a Chen prime.

It is equal to p_13998128 and since 256166159 and 13998128 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256166129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128083079 + 128083080.

It is an arithmetic number, because the mean of its divisors is an integer number (128083080).

Almost surely, 2^256166159 is an apocalyptic number.

256166159 is a deficient number, since it is larger than the sum of its proper divisors (1).

256166159 is an equidigital number, since it uses as much as digits as its factorization.

256166159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 256166159 is about 16005.1916264692. The cubic root of 256166159 is about 635.0977665823.

The spelling of 256166159 in words is "two hundred fifty-six million, one hundred sixty-six thousand, one hundred fifty-nine".