6256564456 has 16 divisors (see below), whose sum is σ = 11737296900. Its totient is φ = 3126618624.

The previous prime is 6256564439. The next prime is 6256564463. The reversal of 6256564456 is 6544656526.

It can be written as a sum of positive squares in 2 ways, for example, as 5649927556 + 606636900 = 75166^2 + 24630^2 .

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, 191895 + ... + 222118.

Almost surely, 2^6256564456 is an apocalyptic number.

It is an amenable number.

6256564456 is a deficient number, since it is larger than the sum of its proper divisors (5480732444).

6256564456 is a wasteful number, since it uses less digits than its factorization.

6256564456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415908 (or 415904 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 49.

The square root of 6256564456 is about 79098.4478735202. The cubic root of 6256564456 is about 1842.6604213417.

The spelling of 6256564456 in words is "six billion, two hundred fifty-six million, five hundred sixty-four thousand, four hundred fifty-six".