16944531625 has 64 divisors (see below), whose sum is σ = 25082044416. Its totient is φ = 11187288000.

The previous prime is 16944531623. The next prime is 16944531649. The reversal of 16944531625 is 52613544961.

It is not a de Polignac number, because 16944531625 - 2¹ = 16944531623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16944531623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2668204 + ... + 2674546.

It is an arithmetic number, because the mean of its divisors is an integer number (391906944).

Almost surely, 2^16944531625 is an apocalyptic number.

It is an amenable number.

16944531625 is a deficient number, since it is larger than the sum of its proper divisors (8137512791).

16944531625 is an equidigital number, since it uses as much as digits as its factorization.

16944531625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479 (or 6469 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The spelling of 16944531625 in words is "sixteen billion, nine hundred forty-four million, five hundred thirty-one thousand, six hundred twenty-five".