12926891525 has 24 divisors (see below), whose sum is σ = 16231532544. Its totient is φ = 10211624000.

The previous prime is 12926891519. The next prime is 12926891533. The reversal of 12926891525 is 52519862921.

It is a happy number.

It is not a de Polignac number, because 12926891525 - 2¹² = 12926887429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 960392 + ... + 973758.

It is an arithmetic number, because the mean of its divisors is an integer number (676313856).

Almost surely, 2^12926891525 is an apocalyptic number.

It is an amenable number.

12926891525 is a deficient number, since it is larger than the sum of its proper divisors (3304641019).

12926891525 is a wasteful number, since it uses less digits than its factorization.

12926891525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861 (or 13856 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

The spelling of 12926891525 in words is "twelve billion, nine hundred twenty-six million, eight hundred ninety-one thousand, five hundred twenty-five".