16626463616225 has 12 divisors (see below), whose sum is σ = 20617147727616. Its totient is φ = 13300956155280.

The previous prime is 16626463616219. The next prime is 16626463616251. The reversal of 16626463616225 is 52261636462661.

It is a happy number.

It is not a de Polignac number, because 16626463616225 - 2¹⁶ = 16626463550689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3779717 + ... + 6894866.

It is an arithmetic number, because the mean of its divisors is an integer number (1718095643968).

Almost surely, 2^{16626463616225} is an apocalyptic number.

It is an amenable number.

16626463616225 is a deficient number, since it is larger than the sum of its proper divisors (3990684111391).

16626463616225 is a wasteful number, since it uses less digits than its factorization.

16626463616225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10736896 (or 10736891 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 56.

The spelling of 16626463616225 in words is "sixteen trillion, six hundred twenty-six billion, four hundred sixty-three million, six hundred sixteen thousand, two hundred twenty-five".