2056678625 has 8 divisors (see below), whose sum is σ = 2566735080. Its totient is φ = 1645342800.

The previous prime is 2056678609. The next prime is 2056678639. The reversal of 2056678625 is 5268766502.

It can be written as a sum of positive squares in 4 ways, for example, as 48832144 + 2007846481 = 6988^2 + 44809^2 .

It is not a de Polignac number, because 2056678625 - 2⁴ = 2056678609 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2056678625.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8226590 + ... + 8226839.

It is an arithmetic number, because the mean of its divisors is an integer number (320841885).

Almost surely, 2^2056678625 is an apocalyptic number.

2056678625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2056678625 is a deficient number, since it is larger than the sum of its proper divisors (510056455).

2056678625 is an equidigital number, since it uses as much as digits as its factorization.

2056678625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16453444 (or 16453434 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The square root of 2056678625 is about 45350.6187940143. The cubic root of 2056678625 is about 1271.7121233957.

The spelling of 2056678625 in words is "two billion, fifty-six million, six hundred seventy-eight thousand, six hundred twenty-five".