16809325 has 12 divisors (see below), whose sum is σ = 22447348. Its totient is φ = 12412800.

The previous prime is 16809323. The next prime is 16809349. The reversal of 16809325 is 52390861.

It can be written as a sum of positive squares in 6 ways, for example, as 5391684 + 11417641 = 2322^2 + 3379^2 .

It is not a de Polignac number, because 16809325 - 2¹ = 16809323 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 (16809323) 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, 25536 + ... + 26185.

Almost surely, 2^16809325 is an apocalyptic number.

It is an amenable number.

16809325 is a deficient number, since it is larger than the sum of its proper divisors (5638023).

16809325 is a wasteful number, since it uses less digits than its factorization.

16809325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51744 (or 51739 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 16809325 is about 4099.9176821005. The cubic root of 16809325 is about 256.1632107435.

The spelling of 16809325 in words is "sixteen million, eight hundred nine thousand, three hundred twenty-five".