16537925 has 6 divisors (see below), whose sum is σ = 20507058. Its totient is φ = 13230320.

The previous prime is 16537867. The next prime is 16537933. The reversal of 16537925 is 52973561.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3928324 + 12609601 = 1982^2 + 3551^2 .

It is not a de Polignac number, because 16537925 - 2⁶ = 16537861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 330734 + ... + 330783.

It is an arithmetic number, because the mean of its divisors is an integer number (3417843).

Almost surely, 2^16537925 is an apocalyptic number.

It is an amenable number.

16537925 is a deficient number, since it is larger than the sum of its proper divisors (3969133).

16537925 is an equidigital number, since it uses as much as digits as its factorization.

16537925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661527 (or 661522 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 16537925 is about 4066.6847677193. The cubic root of 16537925 is about 254.7770703185. Note that the first 3 decimals are identical.

The spelling of 16537925 in words is "sixteen million, five hundred thirty-seven thousand, nine hundred twenty-five".