16504569325 has 12 divisors (see below), whose sum is σ = 20470587988. Its totient is φ = 13200480000.

The previous prime is 16504569283. The next prime is 16504569329. The reversal of 16504569325 is 52396540561.

It can be written as a sum of positive squares in 6 ways, for example, as 799236 + 16503770089 = 894^2 + 128467^2 .

It is not a de Polignac number, because 16504569325 - 2²³ = 16496180717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16504569329) 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, 29575 + ... + 184075.

Almost surely, 2^16504569325 is an apocalyptic number.

It is an amenable number.

16504569325 is a deficient number, since it is larger than the sum of its proper divisors (3966018663).

16504569325 is a wasteful number, since it uses less digits than its factorization.

16504569325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158784 (or 158779 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 16504569325 in words is "sixteen billion, five hundred four million, five hundred sixty-nine thousand, three hundred twenty-five".