16872925 has 36 divisors (see below), whose sum is σ = 23553180. Its totient is φ = 11934720.

The previous prime is 16872923. The next prime is 16872929. The reversal of 16872925 is 52927861.

16872925 = 550² + 551² + ... + 600².

It can be written as a sum of positive squares in 18 ways, for example, as 1592644 + 15280281 = 1262^2 + 3909^2 .

It is not a de Polignac number, because 16872925 - 2¹ = 16872923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872923) 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 35 ways as a sum of consecutive naturals, for example, 456007 + ... + 456043.

It is an arithmetic number, because the mean of its divisors is an integer number (654255).

Almost surely, 2^16872925 is an apocalyptic number.

It is an amenable number.

16872925 is a deficient number, since it is larger than the sum of its proper divisors (6680255).

16872925 is a wasteful number, since it uses less digits than its factorization.

16872925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 88 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 16872925 is about 4107.6666125673. Note that the first 4 decimals coincide. The cubic root of 16872925 is about 256.4858783851.

The spelling of 16872925 in words is "sixteen million, eight hundred seventy-two thousand, nine hundred twenty-five".