12163136525 has 6 divisors (see below), whose sum is σ = 15082289322. Its totient is φ = 9730509200.

The previous prime is 12163136521. The next prime is 12163136543. The reversal of 12163136525 is 52563136121.

It can be written as a sum of positive squares in 3 ways, for example, as 1331739049 + 10831397476 = 36493^2 + 104074^2 .

It is not a de Polignac number, because 12163136525 - 2² = 12163136521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12163136521) 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 5 ways as a sum of consecutive naturals, for example, 243262706 + ... + 243262755.

It is an arithmetic number, because the mean of its divisors is an integer number (2513714887).

Almost surely, 2^12163136525 is an apocalyptic number.

It is an amenable number.

12163136525 is a deficient number, since it is larger than the sum of its proper divisors (2919152797).

12163136525 is an equidigital number, since it uses as much as digits as its factorization.

12163136525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486525471 (or 486525466 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The spelling of 12163136525 in words is "twelve billion, one hundred sixty-three million, one hundred thirty-six thousand, five hundred twenty-five".