2556512525 has 18 divisors (see below), whose sum is σ = 3687640650. Its totient is φ = 1753036320.

The previous prime is 2556512509. The next prime is 2556512551. The reversal of 2556512525 is 5252156552.

It can be written as a sum of positive squares in 3 ways, for example, as 48706441 + 2507806084 = 6979^2 + 50078^2 .

It is not a de Polignac number, because 2556512525 - 2⁴ = 2556512509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1042250 + ... + 1044699.

It is an arithmetic number, because the mean of its divisors is an integer number (204868925).

Almost surely, 2^2556512525 is an apocalyptic number.

2556512525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2556512525 is a deficient number, since it is larger than the sum of its proper divisors (1131128125).

2556512525 is a wasteful number, since it uses less digits than its factorization.

2556512525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086973 (or 2086961 counting only the distinct ones).

The product of its digits is 150000, while the sum is 38.

The square root of 2556512525 is about 50561.9671788984. The cubic root of 2556512525 is about 1367.3592772965.

The spelling of 2556512525 in words is "two billion, five hundred fifty-six million, five hundred twelve thousand, five hundred twenty-five".