12394523125 has 10 divisors (see below), whose sum is σ = 15488196878. Its totient is φ = 9915618000.

The previous prime is 12394523123. The next prime is 12394523143. The reversal of 12394523125 is 52132549321.

It can be written as a sum of positive squares in 5 ways, for example, as 1281568401 + 11112954724 = 35799^2 + 105418^2 .

It is not a de Polignac number, because 12394523125 - 2¹ = 12394523123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12394523123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9914994 + ... + 9916243.

Almost surely, 2^12394523125 is an apocalyptic number.

It is an amenable number.

12394523125 is a deficient number, since it is larger than the sum of its proper divisors (3093673753).

12394523125 is an frugal number, since it uses more digits than its factorization.

12394523125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831257 (or 19831242 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The spelling of 12394523125 in words is "twelve billion, three hundred ninety-four million, five hundred twenty-three thousand, one hundred twenty-five".