12663631425 has 12 divisors (see below), whose sum is σ = 20937204080. Its totient is φ = 6753936720.

The previous prime is 12663631417. The next prime is 12663631427. The reversal of 12663631425 is 52413636621.

It is not a de Polignac number, because 12663631425 - 2³ = 12663631417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12663631427) 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 11 ways as a sum of consecutive naturals, for example, 84424135 + ... + 84424284.

Almost surely, 2^12663631425 is an apocalyptic number.

12663631425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12663631425 is a deficient number, since it is larger than the sum of its proper divisors (8273572655).

12663631425 is a wasteful number, since it uses less digits than its factorization.

12663631425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168848432 (or 168848427 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The spelling of 12663631425 in words is "twelve billion, six hundred sixty-three million, six hundred thirty-one thousand, four hundred twenty-five".