12131130525 has 12 divisors (see below), whose sum is σ = 20056802592. Its totient is φ = 6469936240.

The previous prime is 12131130509. The next prime is 12131130527. The reversal of 12131130525 is 52503113121.

12131130525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12131130525 - 2⁴ = 12131130509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12131130495 and 12131130504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131130527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80874129 + ... + 80874278.

It is an arithmetic number, because the mean of its divisors is an integer number (1671400216).

Almost surely, 2^12131130525 is an apocalyptic number.

12131130525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12131130525 is a deficient number, since it is larger than the sum of its proper divisors (7925672067).

12131130525 is a wasteful number, since it uses less digits than its factorization.

12131130525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161748420 (or 161748415 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 12131130525 its reverse (52503113121), we get a palindrome (64634243646).

The spelling of 12131130525 in words is "twelve billion, one hundred thirty-one million, one hundred thirty thousand, five hundred twenty-five".