12503887525 has 6 divisors (see below), whose sum is σ = 15504820562. Its totient is φ = 10003110000.

The previous prime is 12503887511. The next prime is 12503887531. The reversal of 12503887525 is 52578830521.

12503887525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1631028996 + 10872858529 = 40386^2 + 104273^2 .

It is not a de Polignac number, because 12503887525 - 2⁵ = 12503887493 is a prime.

It is a Duffinian number.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 250077726 + ... + 250077775.

Almost surely, 2^12503887525 is an apocalyptic number.

It is an amenable number.

12503887525 is a deficient number, since it is larger than the sum of its proper divisors (3000933037).

12503887525 is an equidigital number, since it uses as much as digits as its factorization.

12503887525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500155511 (or 500155506 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 12503887525 in words is "twelve billion, five hundred three million, eight hundred eighty-seven thousand, five hundred twenty-five".