12631320525 has 24 divisors (see below), whose sum is σ = 20888573760. Its totient is φ = 6735159040.

The previous prime is 12631320523. The next prime is 12631320571. The reversal of 12631320525 is 52502313621.

It is not a de Polignac number, because 12631320525 - 2¹ = 12631320523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12631320492 and 12631320501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631320521) 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, 358864 + ... + 392486.

It is an arithmetic number, because the mean of its divisors is an integer number (870357240).

Almost surely, 2^12631320525 is an apocalyptic number.

12631320525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12631320525 is a deficient number, since it is larger than the sum of its proper divisors (8257253235).

12631320525 is a wasteful number, since it uses less digits than its factorization.

12631320525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38645 (or 38640 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 12631320525 in words is "twelve billion, six hundred thirty-one million, three hundred twenty thousand, five hundred twenty-five".