256375 has 16 divisors (see below), whose sum is σ = 366912. Its totient is φ = 175200.

The previous prime is 256369. The next prime is 256391. The reversal of 256375 is 573652.

It is not a de Polignac number, because 256375 - 2¹⁷ = 125303 is a prime.

Its product of digits (6300) is a multiple of the sum of its prime factors (315).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (22932).

2²⁵⁶³⁷⁵ is an apocalyptic number.

256375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256375 is a deficient number, since it is larger than the sum of its proper divisors (110537).

256375 is an equidigital number, since it uses as much as digits as its factorization.

256375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 305 counting only the distinct ones).

The product of its digits is 6300, while the sum is 28.

The square root of 256375 is about 506.3348694293. The cubic root of 256375 is about 63.5270308792.

It can be divided in two parts, 25 and 6375, that added together give a square (6400 = 80²).

The spelling of 256375 in words is "two hundred fifty-six thousand, three hundred seventy-five".