16647200025 has 48 divisors (see below), whose sum is σ = 28608210624. Its totient is φ = 8534350080.

The previous prime is 16647200021. The next prime is 16647200039. The reversal of 16647200025 is 52000274661.

It is not a de Polignac number, because 16647200025 - 2² = 16647200021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16647200021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194187 + ... + 266463.

It is an arithmetic number, because the mean of its divisors is an integer number (596004388).

Almost surely, 2^16647200025 is an apocalyptic number.

16647200025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16647200025 is a deficient number, since it is larger than the sum of its proper divisors (11961010599).

16647200025 is a wasteful number, since it uses less digits than its factorization.

16647200025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72410 (or 72405 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 16647200025 its reverse (52000274661), we get a palindrome (68647474686).

The spelling of 16647200025 in words is "sixteen billion, six hundred forty-seven million, two hundred thousand, twenty-five".