256482613 has 4 divisors (see below), whose sum is σ = 260687308. Its totient is φ = 252277920.

The previous prime is 256482571. The next prime is 256482671. The reversal of 256482613 is 316284652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12404484 + 244078129 = 3522^2 + 15623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256482613 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 (256486613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102256 + ... + 2102377.

It is an arithmetic number, because the mean of its divisors is an integer number (65171827).

Almost surely, 2^256482613 is an apocalyptic number.

It is an amenable number.

256482613 is a deficient number, since it is larger than the sum of its proper divisors (4204695).

256482613 is an equidigital number, since it uses as much as digits as its factorization.

256482613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204694.

The product of its digits is 69120, while the sum is 37.

The square root of 256482613 is about 16015.0745549311. The cubic root of 256482613 is about 635.3591809270.

The spelling of 256482613 in words is "two hundred fifty-six million, four hundred eighty-two thousand, six hundred thirteen".