12942475225 has 27 divisors (see below), whose sum is σ = 16359935319. Its totient is φ = 10156939200.

The previous prime is 12942475159. The next prime is 12942475237. The reversal of 12942475225 is 52257424921.

The square root of 12942475225 is 113765.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 12853437129 + 89038096 = 113373^2 + 9436^2 .

It is not a de Polignac number, because 12942475225 - 2⁷ = 12942475097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 34698139 + ... + 34698511.

Almost surely, 2^12942475225 is an apocalyptic number.

12942475225 is the 113765-th square number.

12942475225 is the 56883-rd centered octagonal number.

It is an amenable number.

12942475225 is a deficient number, since it is larger than the sum of its proper divisors (3417460094).

12942475225 is an frugal number, since it uses more digits than its factorization.

12942475225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 439 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The spelling of 12942475225 in words is "twelve billion, nine hundred forty-two million, four hundred seventy-five thousand, two hundred twenty-five".