12542963425 has 6 divisors (see below), whose sum is σ = 15553274678. Its totient is φ = 10034370720.

The previous prime is 12542963423. The next prime is 12542963453. The reversal of 12542963425 is 52436924521.

It can be written as a sum of positive squares in 3 ways, for example, as 29408929 + 12513554496 = 5423^2 + 111864^2 .

It is not a de Polignac number, because 12542963425 - 2¹ = 12542963423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12542963423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250859244 + ... + 250859293.

Almost surely, 2^12542963425 is an apocalyptic number.

It is an amenable number.

12542963425 is a deficient number, since it is larger than the sum of its proper divisors (3010311253).

12542963425 is an equidigital number, since it uses as much as digits as its factorization.

12542963425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501718547 (or 501718542 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The spelling of 12542963425 in words is "twelve billion, five hundred forty-two million, nine hundred sixty-three thousand, four hundred twenty-five".