258416256 has 64 divisors (see below), whose sum is σ = 784486080. Its totient is φ = 73832448.

The previous prime is 258416227. The next prime is 258416273. The reversal of 258416256 is 652614852.

258416256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×258416256² = 133557922730115072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45381 + ... + 50756.

It is an arithmetic number, because the mean of its divisors is an integer number (12257595).

Almost surely, 2^258416256 is an apocalyptic number.

It is an amenable number.

258416256 is an abundant number, since it is smaller than the sum of its proper divisors (526069824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258416256 is an equidigital number, since it uses as much as digits as its factorization.

258416256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96161 (or 96149 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 258416256 is about 16075.3306653394. The cubic root of 258416256 is about 636.9518597785.

The spelling of 258416256 in words is "two hundred fifty-eight million, four hundred sixteen thousand, two hundred fifty-six".