256237875 has 48 divisors (see below), whose sum is σ = 464330880. Its totient is φ = 135945600.

The previous prime is 256237873. The next prime is 256237879. The reversal of 256237875 is 578732652.

256237875 is a `hidden beast` number, since 2 + 562 + 3 + 7 + 87 + 5 = 666.

It is not a de Polignac number, because 256237875 - 2¹ = 256237873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (705600) is a multiple of the sum of its prime divisors (1200).

It is a self number, because there is not a number n which added to its sum of digits gives 256237875.

It is not an unprimeable number, because it can be changed into a prime (256237873) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268399 + ... + 269351.

It is an arithmetic number, because the mean of its divisors is an integer number (9673560).

Almost surely, 2^256237875 is an apocalyptic number.

256237875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256237875 is a deficient number, since it is larger than the sum of its proper divisors (208093005).

256237875 is a wasteful number, since it uses less digits than its factorization.

256237875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1200 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 256237875 is about 16007.4318677294. The cubic root of 256237875 is about 635.1570281464.

The spelling of 256237875 in words is "two hundred fifty-six million, two hundred thirty-seven thousand, eight hundred seventy-five".