16500325 has 6 divisors (see below), whose sum is σ = 20460434. Its totient is φ = 13200240.

The previous prime is 16500313. The next prime is 16500397. The reversal of 16500325 is 52300561.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 388129 + 16112196 = 623^2 + 4014^2 .

It is not a de Polignac number, because 16500325 - 2⁵ = 16500293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16500296 and 16500305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 329982 + ... + 330031.

Almost surely, 2^16500325 is an apocalyptic number.

It is an amenable number.

16500325 is a deficient number, since it is larger than the sum of its proper divisors (3960109).

16500325 is an equidigital number, since it uses as much as digits as its factorization.

16500325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660023 (or 660018 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 16500325 is about 4062.0592068556. The cubic root of 16500325 is about 254.5838399711.

Adding to 16500325 its reverse (52300561), we get a palindrome (68800886).

The spelling of 16500325 in words is "sixteen million, five hundred thousand, three hundred twenty-five".