256262745 has 16 divisors (see below), whose sum is σ = 411111360. Its totient is φ = 136309824.

The previous prime is 256262723. The next prime is 256262761. The reversal of 256262745 is 547262652.

It is not a de Polignac number, because 256262745 - 2⁶ = 256262681 is a prime.

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, 16854 + ... + 28223.

It is an arithmetic number, because the mean of its divisors is an integer number (25694460).

Almost surely, 2^256262745 is an apocalyptic number.

It is an amenable number.

256262745 is a deficient number, since it is larger than the sum of its proper divisors (154848615).

256262745 is a wasteful number, since it uses less digits than its factorization.

256262745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45464.

The product of its digits is 201600, while the sum is 39.

The square root of 256262745 is about 16008.2086755514. The cubic root of 256262745 is about 635.1775765583.

The spelling of 256262745 in words is "two hundred fifty-six million, two hundred sixty-two thousand, seven hundred forty-five".