16512916625 has 16 divisors (see below), whose sum is σ = 21692760960. Its totient is φ = 12515050800.

The previous prime is 16512916613. The next prime is 16512916627. The reversal of 16512916625 is 52661921561.

It is not a de Polignac number, because 16512916625 - 2¹² = 16512912529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16512916627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3474029 + ... + 3478778.

It is an arithmetic number, because the mean of its divisors is an integer number (1355797560).

Almost surely, 2^16512916625 is an apocalyptic number.

It is an amenable number.

16512916625 is a deficient number, since it is larger than the sum of its proper divisors (5179844335).

16512916625 is an equidigital number, since it uses as much as digits as its factorization.

16512916625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952841 (or 6952831 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The spelling of 16512916625 in words is "sixteen billion, five hundred twelve million, nine hundred sixteen thousand, six hundred twenty-five".