13663244425 has 6 divisors (see below), whose sum is σ = 16942423118. Its totient is φ = 10930595520.

The previous prime is 13663244381. The next prime is 13663244431. The reversal of 13663244425 is 52444236631.

It can be written as a sum of positive squares in 3 ways, for example, as 2707016841 + 10956227584 = 52029^2 + 104672^2 .

It is not a de Polignac number, because 13663244425 - 2⁷ = 13663244297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273264864 + ... + 273264913.

Almost surely, 2^13663244425 is an apocalyptic number.

It is an amenable number.

13663244425 is a deficient number, since it is larger than the sum of its proper divisors (3279178693).

13663244425 is an equidigital number, since it uses as much as digits as its factorization.

13663244425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546529787 (or 546529782 counting only the distinct ones).

The product of its digits is 414720, while the sum is 40.

The spelling of 13663244425 in words is "thirteen billion, six hundred sixty-three million, two hundred forty-four thousand, four hundred twenty-five".