16617325 has 6 divisors (see below), whose sum is σ = 20605514. Its totient is φ = 13293840.

The previous prime is 16617317. The next prime is 16617353. The reversal of 16617325 is 52371661.

It can be written as a sum of positive squares in 3 ways, for example, as 2979076 + 13638249 = 1726^2 + 3693^2 .

It is not a de Polignac number, because 16617325 - 2³ = 16617317 is a prime.

It is a super-2 number, since 2×16617325² = 552270980311250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332322 + ... + 332371.

Almost surely, 2^16617325 is an apocalyptic number.

It is an amenable number.

16617325 is a deficient number, since it is larger than the sum of its proper divisors (3988189).

16617325 is an equidigital number, since it uses as much as digits as its factorization.

16617325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664703 (or 664698 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 16617325 is about 4076.4353300402. The cubic root of 16617325 is about 255.1841550698.

Adding to 16617325 its reverse (52371661), we get a palindrome (68988986).

The spelling of 16617325 in words is "sixteen million, six hundred seventeen thousand, three hundred twenty-five".