256252213 has 16 divisors (see below), whose sum is σ = 299836800. Its totient is φ = 218910048.

The previous prime is 256252201. The next prime is 256252229. The reversal of 256252213 is 312252652.

256252213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256252213 - 2⁹ = 256251701 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 (256252253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117945 + ... + 120097.

It is an arithmetic number, because the mean of its divisors is an integer number (18739800).

Almost surely, 2^256252213 is an apocalyptic number.

It is an amenable number.

256252213 is a deficient number, since it is larger than the sum of its proper divisors (43584587).

256252213 is an equidigital number, since it uses as much as digits as its factorization.

256252213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521 (or 2507 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 256252213 is about 16007.8797159399. The cubic root of 256252213 is about 635.1688748358.

The spelling of 256252213 in words is "two hundred fifty-six million, two hundred fifty-two thousand, two hundred thirteen".