12165625 has 24 divisors (see below), whose sum is σ = 16170840. Its totient is φ = 9120000.

The previous prime is 12165619. The next prime is 12165631. The reversal of 12165625 is 52656121.

It is an interprime number because it is at equal distance from previous prime (12165619) and next prime (12165631).

It can be written as a sum of positive squares in 12 ways, for example, as 9903609 + 2262016 = 3147^2 + 1504^2 .

It is not a de Polignac number, because 12165625 - 2⁷ = 12165497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12165593 and 12165602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53011 + ... + 53239.

It is an arithmetic number, because the mean of its divisors is an integer number (673785).

Almost surely, 2^12165625 is an apocalyptic number.

It is an amenable number.

12165625 is a deficient number, since it is larger than the sum of its proper divisors (4005215).

12165625 is an frugal number, since it uses more digits than its factorization.

12165625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 251 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 12165625 is about 3487.9256012708. The cubic root of 12165625 is about 229.9913355274.

The spelling of 12165625 in words is "twelve million, one hundred sixty-five thousand, six hundred twenty-five".