12699403125 has 24 divisors (see below), whose sum is σ = 21164332896. Its totient is φ = 6773010000.

The previous prime is 12699403109. The next prime is 12699403127. The reversal of 12699403125 is 52130499621.

It is not a de Polignac number, because 12699403125 - 2⁴ = 12699403109 is a prime.

It is a super-2 number, since 2×12699403125² (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 (12699403127) 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 23 ways as a sum of consecutive naturals, for example, 667927 + ... + 686676.

It is an arithmetic number, because the mean of its divisors is an integer number (881847204).

Almost surely, 2^12699403125 is an apocalyptic number.

12699403125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12699403125 is a deficient number, since it is larger than the sum of its proper divisors (8464929771).

12699403125 is an frugal number, since it uses more digits than its factorization.

12699403125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354631 (or 1354611 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 12699403125 in words is "twelve billion, six hundred ninety-nine million, four hundred three thousand, one hundred twenty-five".