16662325 has 6 divisors (see below), whose sum is σ = 20661314. Its totient is φ = 13329840.

The previous prime is 16662319. The next prime is 16662341. The reversal of 16662325 is 52326661.

It can be written as a sum of positive squares in 3 ways, for example, as 1240996 + 15421329 = 1114^2 + 3927^2 .

It is not a de Polignac number, because 16662325 - 2⁵ = 16662293 is a prime.

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, 333222 + ... + 333271.

Almost surely, 2^16662325 is an apocalyptic number.

It is an amenable number.

16662325 is a deficient number, since it is larger than the sum of its proper divisors (3998989).

16662325 is an equidigital number, since it uses as much as digits as its factorization.

16662325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666503 (or 666498 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 16662325 is about 4081.9511266060. The cubic root of 16662325 is about 255.4142951374.

Adding to 16662325 its reverse (52326661), we get a palindrome (68988986).

The spelling of 16662325 in words is "sixteen million, six hundred sixty-two thousand, three hundred twenty-five".