256258413 has 24 divisors (see below), whose sum is σ = 384433920. Its totient is φ = 164293920.

The previous prime is 256258381. The next prime is 256258423. The reversal of 256258413 is 314852652.

256258413 is a `hidden beast` number, since 2 + 5 + 62 + 584 + 13 = 666.

It is not a de Polignac number, because 256258413 - 2⁵ = 256258381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256258423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68920 + ... + 72542.

It is an arithmetic number, because the mean of its divisors is an integer number (16018080).

Almost surely, 2^256258413 is an apocalyptic number.

It is an amenable number.

256258413 is a deficient number, since it is larger than the sum of its proper divisors (128175507).

256258413 is a wasteful number, since it uses less digits than its factorization.

256258413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929 (or 3926 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 256258413 is about 16008.0733693971. The cubic root of 256258413 is about 635.1739974131.

The spelling of 256258413 in words is "two hundred fifty-six million, two hundred fifty-eight thousand, four hundred thirteen".