12625665 has 16 divisors (see below), whose sum is σ = 21755328. Its totient is φ = 6215616.

The previous prime is 12625661. The next prime is 12625687. The reversal of 12625665 is 56652621.

It is a happy number.

12625665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12625665 - 2² = 12625661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12625661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32179 + ... + 32568.

It is an arithmetic number, because the mean of its divisors is an integer number (1359708).

Almost surely, 2^12625665 is an apocalyptic number.

12625665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12625665 is a deficient number, since it is larger than the sum of its proper divisors (9129663).

12625665 is a wasteful number, since it uses less digits than its factorization.

12625665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64768.

The product of its digits is 21600, while the sum is 33.

The square root of 12625665 is about 3553.2611781292. The cubic root of 12625665 is about 232.8545636502.

The spelling of 12625665 in words is "twelve million, six hundred twenty-five thousand, six hundred sixty-five".