2056637768825 has 24 divisors (see below), whose sum is σ = 2577900259032. Its totient is φ = 1627477125120.

The previous prime is 2056637768797. The next prime is 2056637768827. The reversal of 2056637768825 is 5288677366502.

It can be written as a sum of positive squares in 12 ways, for example, as 115795922944 + 1940841845881 = 340288^2 + 1393141^2 .

It is not a de Polignac number, because 2056637768825 - 2⁸ = 2056637768569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056637768827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4325807 + ... + 4777643.

It is an arithmetic number, because the mean of its divisors is an integer number (107412510793).

Almost surely, 2^{2056637768825} is an apocalyptic number.

2056637768825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2056637768825 is a deficient number, since it is larger than the sum of its proper divisors (521262490207).

2056637768825 is a wasteful number, since it uses less digits than its factorization.

2056637768825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453821 (or 453816 counting only the distinct ones).

The product of its (nonzero) digits is 203212800, while the sum is 65.

The spelling of 2056637768825 in words is "two trillion, fifty-six billion, six hundred thirty-seven million, seven hundred sixty-eight thousand, eight hundred twenty-five".