13625442644 has 36 divisors (see below), whose sum is σ = 26278778400. Its totient is φ = 6176958480.

The previous prime is 13625442643. The next prime is 13625442671. The reversal of 13625442644 is 44624452631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625442641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146297 + ... + 220575.

Almost surely, 2^13625442644 is an apocalyptic number.

It is an amenable number.

13625442644 is a deficient number, since it is larger than the sum of its proper divisors (12653335756).

13625442644 is a wasteful number, since it uses less digits than its factorization.

13625442644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74684 (or 74671 counting only the distinct ones).

The product of its digits is 552960, while the sum is 41.

The spelling of 13625442644 in words is "thirteen billion, six hundred twenty-five million, four hundred forty-two thousand, six hundred forty-four".