16690025 has 24 divisors (see below), whose sum is σ = 22793184. Its totient is φ = 12022400.

The previous prime is 16690001. The next prime is 16690031. The reversal of 16690025 is 52009661.

It is not a de Polignac number, because 16690025 - 2¹⁸ = 16427881 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16690025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37454 + ... + 37896.

It is an arithmetic number, because the mean of its divisors is an integer number (949716).

Almost surely, 2^16690025 is an apocalyptic number.

It is an amenable number.

16690025 is a deficient number, since it is larger than the sum of its proper divisors (6103159).

16690025 is a wasteful number, since it uses less digits than its factorization.

16690025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 16690025 is about 4085.3427028831. The cubic root of 16690025 is about 255.5557531679. Note that the first 3 decimals are identical.

Adding to 16690025 its reverse (52009661), we get a palindrome (68699686).

The spelling of 16690025 in words is "sixteen million, six hundred ninety thousand, twenty-five".