16925121 has 12 divisors (see below), whose sum is σ = 24848980. Its totient is φ = 11098080.

The previous prime is 16925119. The next prime is 16925159. The reversal of 16925121 is 12152961.

It can be written as a sum of positive squares in 2 ways, for example, as 7096896 + 9828225 = 2664^2 + 3135^2 .

It is not a de Polignac number, because 16925121 - 2¹ = 16925119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16925191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14866 + ... + 15963.

Almost surely, 2^16925121 is an apocalyptic number.

It is an amenable number.

16925121 is a deficient number, since it is larger than the sum of its proper divisors (7923859).

16925121 is a wasteful number, since it uses less digits than its factorization.

16925121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30896 (or 30893 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 16925121 is about 4114.0151919992. The cubic root of 16925121 is about 256.7500838288.

The spelling of 16925121 in words is "sixteen million, nine hundred twenty-five thousand, one hundred twenty-one".