256253755 has 8 divisors (see below), whose sum is σ = 307591632. Its totient is φ = 204944928.

The previous prime is 256253747. The next prime is 256253759. The reversal of 256253755 is 557352652.

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

It is a cyclic number.

It is not a de Polignac number, because 256253755 - 2³ = 256253747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256253759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26032 + ... + 34498.

It is an arithmetic number, because the mean of its divisors is an integer number (38448954).

Almost surely, 2^256253755 is an apocalyptic number.

256253755 is a deficient number, since it is larger than the sum of its proper divisors (51337877).

256253755 is an equidigital number, since it uses as much as digits as its factorization.

256253755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14525.

The product of its digits is 315000, while the sum is 40.

The square root of 256253755 is about 16007.9278796476. The cubic root of 256253755 is about 635.1701488781.

The spelling of 256253755 in words is "two hundred fifty-six million, two hundred fifty-three thousand, seven hundred fifty-five".