256601275 has 12 divisors (see below), whose sum is σ = 363640912. Its totient is φ = 175955040.

The previous prime is 256601273. The next prime is 256601287. The reversal of 256601275 is 572106652.

It is not a de Polignac number, because 256601275 - 2¹ = 256601273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256601275.

It is not an unprimeable number, because it can be changed into a prime (256601273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 732972 + ... + 733321.

Almost surely, 2^256601275 is an apocalyptic number.

256601275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256601275 is a deficient number, since it is larger than the sum of its proper divisors (107039637).

256601275 is a wasteful number, since it uses less digits than its factorization.

256601275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466310 (or 1466305 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 256601275 is about 16018.7788236182. The cubic root of 256601275 is about 635.4571490587.

The spelling of 256601275 in words is "two hundred fifty-six million, six hundred one thousand, two hundred seventy-five".