12128831525 has 12 divisors (see below), whose sum is σ = 15051194400. Its totient is φ = 9695682480.

The previous prime is 12128831497. The next prime is 12128831531. The reversal of 12128831525 is 52513882121.

12128831525 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 12128831525 - 2¹⁶ = 12128765989 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 150935 + ... + 216884.

It is an arithmetic number, because the mean of its divisors is an integer number (1254266200).

Almost surely, 2^12128831525 is an apocalyptic number.

It is an amenable number.

12128831525 is a deficient number, since it is larger than the sum of its proper divisors (2922362875).

12128831525 is a wasteful number, since it uses less digits than its factorization.

12128831525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369148 (or 369143 counting only the distinct ones).

The product of its digits is 38400, while the sum is 38.

The spelling of 12128831525 in words is "twelve billion, one hundred twenty-eight million, eight hundred thirty-one thousand, five hundred twenty-five".