2563261256 has 16 divisors (see below), whose sum is σ = 4831280640. Its totient is φ = 1274919760.

The previous prime is 2563261249. The next prime is 2563261271. The reversal of 2563261256 is 6521623652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837236 + ... + 840291.

It is an arithmetic number, because the mean of its divisors is an integer number (301955040).

Almost surely, 2^2563261256 is an apocalyptic number.

It is an amenable number.

2563261256 is a deficient number, since it is larger than the sum of its proper divisors (2268019384).

2563261256 is a wasteful number, since it uses less digits than its factorization.

2563261256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677724 (or 1677720 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 2563261256 is about 50628.6604207538. The cubic root of 2563261256 is about 1368.5614138933.

The spelling of 2563261256 in words is "two billion, five hundred sixty-three million, two hundred sixty-one thousand, two hundred fifty-six".