16899725 has 12 divisors (see below), whose sum is σ = 21162336. Its totient is φ = 13386480.

The previous prime is 16899709. The next prime is 16899761. The reversal of 16899725 is 52799861.

It is not a de Polignac number, because 16899725 - 2⁴ = 16899709 is a prime.

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 16899725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 707 + ... + 5856.

It is an arithmetic number, because the mean of its divisors is an integer number (1763528).

Almost surely, 2^16899725 is an apocalyptic number.

It is an amenable number.

16899725 is a deficient number, since it is larger than the sum of its proper divisors (4262611).

16899725 is a wasteful number, since it uses less digits than its factorization.

16899725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6676 (or 6671 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 16899725 is about 4110.9275109153. The cubic root of 16899725 is about 256.6216024404.

The spelling of 16899725 in words is "sixteen million, eight hundred ninety-nine thousand, seven hundred twenty-five".