256125616 has 20 divisors (see below), whose sum is σ = 497469400. Its totient is φ = 127746432.

The previous prime is 256125577. The next prime is 256125659. The reversal of 256125616 is 616521652.

It is an alternating number because its digits alternate between even and odd.

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, 13026 + ... + 26113.

It is an arithmetic number, because the mean of its divisors is an integer number (24873470).

Almost surely, 2^256125616 is an apocalyptic number.

It is an amenable number.

256125616 is a deficient number, since it is larger than the sum of its proper divisors (241343784).

256125616 is a wasteful number, since it uses less digits than its factorization.

256125616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39556 (or 39550 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 256125616 is about 16003.9250185697. The cubic root of 256125616 is about 635.0642595188.

The spelling of 256125616 in words is "two hundred fifty-six million, one hundred twenty-five thousand, six hundred sixteen".