12165925 has 6 divisors (see below), whose sum is σ = 15085778. Its totient is φ = 9732720.

The previous prime is 12165917. The next prime is 12165929. The reversal of 12165925 is 52956121.

12165925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 544644 + 11621281 = 738^2 + 3409^2 .

It is not a de Polignac number, because 12165925 - 2³ = 12165917 is a prime.

It is a super-2 number, since 2×12165925² = 296019462211250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243294 + ... + 243343.

Almost surely, 2^12165925 is an apocalyptic number.

It is an amenable number.

12165925 is a deficient number, since it is larger than the sum of its proper divisors (2919853).

12165925 is an equidigital number, since it uses as much as digits as its factorization.

12165925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486647 (or 486642 counting only the distinct ones).

The product of its digits is 5400, while the sum is 31.

The square root of 12165925 is about 3487.9686065101. The cubic root of 12165925 is about 229.9932260135.

The spelling of 12165925 in words is "twelve million, one hundred sixty-five thousand, nine hundred twenty-five".