12017775925 has 12 divisors (see below), whose sum is σ = 15038761540. Its totient is φ = 9526014720.

The previous prime is 12017775919. The next prime is 12017775929. The reversal of 12017775925 is 52957771021.

It can be written as a sum of positive squares in 6 ways, for example, as 7150276 + 12010625649 = 2674^2 + 109593^2 .

It is not a de Polignac number, because 12017775925 - 2²³ = 12009387317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12017775929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2202372 + ... + 2207821.

Almost surely, 2^12017775925 is an apocalyptic number.

It is an amenable number.

12017775925 is a deficient number, since it is larger than the sum of its proper divisors (3020985615).

12017775925 is a wasteful number, since it uses less digits than its factorization.

12017775925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410312 (or 4410307 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 46.

The spelling of 12017775925 in words is "twelve billion, seventeen million, seven hundred seventy-five thousand, nine hundred twenty-five".