16865125 has 8 divisors (see below), whose sum is σ = 21047832. Its totient is φ = 13492000.

The previous prime is 16865119. The next prime is 16865129. The reversal of 16865125 is 52156861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 720801 + 16144324 = 849^2 + 4018^2 .

It is not a de Polignac number, because 16865125 - 2⁷ = 16864997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16865129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67336 + ... + 67585.

It is an arithmetic number, because the mean of its divisors is an integer number (2630979).

Almost surely, 2^16865125 is an apocalyptic number.

It is an amenable number.

16865125 is a deficient number, since it is larger than the sum of its proper divisors (4182707).

16865125 is an equidigital number, since it uses as much as digits as its factorization.

16865125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134936 (or 134926 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 16865125 is about 4106.7170586735. The cubic root of 16865125 is about 256.4463496093.

The spelling of 16865125 in words is "sixteen million, eight hundred sixty-five thousand, one hundred twenty-five".