16625313082225 has 27 divisors (see below), whose sum is σ = 20903530560609. Its totient is φ = 13116880958400.

The previous prime is 16625313082211. The next prime is 16625313082253. The reversal of 16625313082225 is 52228031352661.

The square root of 16625313082225 is 4077415.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 90972814689 + 16534340267536 = 301617^2 + 4066244^2 .

It is not a de Polignac number, because 16625313082225 - 2²⁵ = 16625279527793 is a prime.

It is a super-2 number, since 2×16625313082225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1488250890 + ... + 1488262060.

Almost surely, 2^{16625313082225} is an apocalyptic number.

16625313082225 is the 4077415-th square number.

16625313082225 is the 2038708-th centered octagonal number.

It is an amenable number.

16625313082225 is a deficient number, since it is larger than the sum of its proper divisors (4278217478384).

16625313082225 is an frugal number, since it uses more digits than its factorization.

16625313082225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22498 (or 11249 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 16625313082225 in words is "sixteen trillion, six hundred twenty-five billion, three hundred thirteen million, eighty-two thousand, two hundred twenty-five".