256875159 has 4 divisors (see below), whose sum is σ = 342500216. Its totient is φ = 171250104.

The previous prime is 256875139. The next prime is 256875167. The reversal of 256875159 is 951578652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 256875159 - 2⁸ = 256874903 is a prime.

It is a super-2 number, since 2×256875159² = 131969694622550562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256875139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42812524 + ... + 42812529.

It is an arithmetic number, because the mean of its divisors is an integer number (85625054).

Almost surely, 2^256875159 is an apocalyptic number.

256875159 is a deficient number, since it is larger than the sum of its proper divisors (85625057).

256875159 is an equidigital number, since it uses as much as digits as its factorization.

256875159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85625056.

The product of its digits is 756000, while the sum is 48.

The square root of 256875159 is about 16027.3253851040. The cubic root of 256875159 is about 635.6831542507.

The spelling of 256875159 in words is "two hundred fifty-six million, eight hundred seventy-five thousand, one hundred fifty-nine".