256595413 has 4 divisors (see below), whose sum is σ = 259687008. Its totient is φ = 253503820.

The previous prime is 256595411. The next prime is 256595447. The reversal of 256595413 is 314595652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256595413 - 2¹ = 256595411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256595411) 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 3 ways as a sum of consecutive naturals, for example, 1545673 + ... + 1545838.

It is an arithmetic number, because the mean of its divisors is an integer number (64921752).

Almost surely, 2^256595413 is an apocalyptic number.

It is an amenable number.

256595413 is a deficient number, since it is larger than the sum of its proper divisors (3091595).

256595413 is an equidigital number, since it uses as much as digits as its factorization.

256595413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091594.

The product of its digits is 162000, while the sum is 40.

The square root of 256595413 is about 16018.5958498240. The cubic root of 256595413 is about 635.4523100620.

The spelling of 256595413 in words is "two hundred fifty-six million, five hundred ninety-five thousand, four hundred thirteen".