256225516 has 12 divisors (see below), whose sum is σ = 448646688. Its totient is φ = 128040752.

The previous prime is 256225499. The next prime is 256225531. The reversal of 256225516 is 615522652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9556 + ... + 24571.

It is an arithmetic number, because the mean of its divisors is an integer number (37387224).

Almost surely, 2^256225516 is an apocalyptic number.

It is an amenable number.

256225516 is a deficient number, since it is larger than the sum of its proper divisors (192421172).

256225516 is a wasteful number, since it uses less digits than its factorization.

256225516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36008 (or 36006 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 256225516 is about 16007.0458236365. The cubic root of 256225516 is about 635.1468162395.

The spelling of 256225516 in words is "two hundred fifty-six million, two hundred twenty-five thousand, five hundred sixteen".