12887925625 has 45 divisors (see below), whose sum is σ = 17068396521. Its totient is φ = 9726822000.

The previous prime is 12887925623. The next prime is 12887925637. The reversal of 12887925625 is 52652978821.

The square root of 12887925625 is 113525.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1010413369 + 11877512256 = 31787^2 + 108984^2 .

It is not a de Polignac number, because 12887925625 - 2¹ = 12887925623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12887925623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 53924256 + ... + 53924494.

Almost surely, 2^12887925625 is an apocalyptic number.

12887925625 is the 113525-th square number.

12887925625 is the 56763-rd centered octagonal number.

It is an amenable number.

12887925625 is a deficient number, since it is larger than the sum of its proper divisors (4180470896).

12887925625 is an frugal number, since it uses more digits than its factorization.

12887925625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 263 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 55.

The spelling of 12887925625 in words is "twelve billion, eight hundred eighty-seven million, nine hundred twenty-five thousand, six hundred twenty-five".