2556125492 has 18 divisors (see below), whose sum is σ = 4489749894. Its totient is φ = 1273357120.

The previous prime is 2556125477. The next prime is 2556125521. The reversal of 2556125492 is 2945216552.

It can be written as a sum of positive squares in 3 ways, for example, as 678289936 + 1877835556 = 26044^2 + 43334^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311798 + ... + 319890.

Almost surely, 2^2556125492 is an apocalyptic number.

It is an amenable number.

2556125492 is a deficient number, since it is larger than the sum of its proper divisors (1933624402).

2556125492 is an equidigital number, since it uses as much as digits as its factorization.

2556125492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659 (or 8376 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 2556125492 is about 50558.1397205237. The cubic root of 2556125492 is about 1367.2902718491.

The spelling of 2556125492 in words is "two billion, five hundred fifty-six million, one hundred twenty-five thousand, four hundred ninety-two".