12665025 has 48 divisors (see below), whose sum is σ = 24105600. Its totient is φ = 6511680.

The previous prime is 12664997. The next prime is 12665041. The reversal of 12665025 is 52056621.

12665025 is a `hidden beast` number, since 1 + 2 + 6 + 650 + 2 + 5 = 666.

It is not a de Polignac number, because 12665025 - 2⁶ = 12664961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12665025.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 19252 + ... + 19898.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^12665025 is an apocalyptic number.

12665025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12665025 is a deficient number, since it is larger than the sum of its proper divisors (11440575).

12665025 is a wasteful number, since it uses less digits than its factorization.

12665025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 12665025 is about 3558.7954422810. The cubic root of 12665025 is about 233.0962842008.

The spelling of 12665025 in words is "twelve million, six hundred sixty-five thousand, twenty-five".