12920325525 has 24 divisors (see below), whose sum is σ = 23735117760. Its totient is φ = 6890839920.

The previous prime is 12920325443. The next prime is 12920325547. The reversal of 12920325525 is 52552302921.

12920325525 is a `hidden beast` number, since 12 + 92 + 0 + 3 + 2 + 552 + 5 = 666.

It is not a de Polignac number, because 12920325525 - 2⁸ = 12920325269 is a prime.

It is a super-4 number, since 4×12920325525⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12920325525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9569937 + ... + 9571286.

It is an arithmetic number, because the mean of its divisors is an integer number (988963240).

Almost surely, 2^12920325525 is an apocalyptic number.

12920325525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12920325525 is a deficient number, since it is larger than the sum of its proper divisors (10814792235).

12920325525 is a wasteful number, since it uses less digits than its factorization.

12920325525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19141242 (or 19141231 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 12920325525 in words is "twelve billion, nine hundred twenty million, three hundred twenty-five thousand, five hundred twenty-five".