12689707725 has 48 divisors (see below), whose sum is σ = 23335312000. Its totient is φ = 6760920960.

The previous prime is 12689707721. The next prime is 12689707753. The reversal of 12689707725 is 52770798621.

It is a happy number.

It is not a de Polignac number, because 12689707725 - 2² = 12689707721 is a prime.

It is a super-2 number, since 2×12689707725² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689707721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 688176 + ... + 706374.

Almost surely, 2^12689707725 is an apocalyptic number.

12689707725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12689707725 is a deficient number, since it is larger than the sum of its proper divisors (10645604275).

12689707725 is a wasteful number, since it uses less digits than its factorization.

12689707725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19251 (or 19240 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The spelling of 12689707725 in words is "twelve billion, six hundred eighty-nine million, seven hundred seven thousand, seven hundred twenty-five".