16669625 has 16 divisors (see below), whose sum is σ = 23776896. Its totient is φ = 11430000.

The previous prime is 16669621. The next prime is 16669643. The reversal of 16669625 is 52696661.

It is not a de Polignac number, because 16669625 - 2² = 16669621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16669621) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8651 + ... + 10400.

It is an arithmetic number, because the mean of its divisors is an integer number (1486056).

Almost surely, 2^16669625 is an apocalyptic number.

It is an amenable number.

16669625 is a deficient number, since it is larger than the sum of its proper divisors (7107271).

16669625 is an equidigital number, since it uses as much as digits as its factorization.

16669625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19073 (or 19063 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 16669625 is about 4082.8452089199. The cubic root of 16669625 is about 255.4515898953.

The spelling of 16669625 in words is "sixteen million, six hundred sixty-nine thousand, six hundred twenty-five".