16885725 has 12 divisors (see below), whose sum is σ = 27917856. Its totient is φ = 9005680.

The previous prime is 16885721. The next prime is 16885733. The reversal of 16885725 is 52758861.

It is not a de Polignac number, because 16885725 - 2² = 16885721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16885721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112497 + ... + 112646.

It is an arithmetic number, because the mean of its divisors is an integer number (2326488).

Almost surely, 2^16885725 is an apocalyptic number.

16885725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16885725 is a deficient number, since it is larger than the sum of its proper divisors (11032131).

16885725 is a wasteful number, since it uses less digits than its factorization.

16885725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225156 (or 225151 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 16885725 is about 4109.2243793689. The cubic root of 16885725 is about 256.5507197293.

The spelling of 16885725 in words is "sixteen million, eight hundred eighty-five thousand, seven hundred twenty-five".