256060257 has 8 divisors (see below), whose sum is σ = 341984160. Its totient is φ = 170421600.

The previous prime is 256060223. The next prime is 256060297. The reversal of 256060257 is 752060652.

256060257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256060257 - 2¹⁴ = 256043873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256060297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69207 + ... + 72812.

It is an arithmetic number, because the mean of its divisors is an integer number (42748020).

Almost surely, 2^256060257 is an apocalyptic number.

It is an amenable number.

256060257 is a deficient number, since it is larger than the sum of its proper divisors (85923903).

256060257 is a wasteful number, since it uses less digits than its factorization.

256060257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142623.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 256060257 is about 16001.8829204566. The cubic root of 256060257 is about 635.0102356421.

The spelling of 256060257 in words is "two hundred fifty-six million, sixty thousand, two hundred fifty-seven".