12688865325 has 48 divisors (see below), whose sum is σ = 23322217600. Its totient is φ = 6763824000.

The previous prime is 12688865303. The next prime is 12688865327. The reversal of 12688865325 is 52356888621.

12688865325 is a `hidden beast` number, since 1 + 26 + 8 + 8 + 86 + 532 + 5 = 666.

It is not a de Polignac number, because 12688865325 - 2⁹ = 12688864813 is a prime.

It is a super-2 number, since 2×12688865325² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688865327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1718241 + ... + 1725609.

Almost surely, 2^12688865325 is an apocalyptic number.

12688865325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12688865325 is a deficient number, since it is larger than the sum of its proper divisors (10633352275).

12688865325 is a wasteful number, since it uses less digits than its factorization.

12688865325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9939 (or 9928 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 12688865325 in words is "twelve billion, six hundred eighty-eight million, eight hundred sixty-five thousand, three hundred twenty-five".