12525666 has 16 divisors (see below), whose sum is σ = 25151904. Its totient is φ = 4158464.

The previous prime is 12525661. The next prime is 12525673. The reversal of 12525666 is 66652521.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12525661) 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, 2520 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (1571994).

Almost surely, 2^12525666 is an apocalyptic number.

12525666 is an abundant number, since it is smaller than the sum of its proper divisors (12626238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12525666 is a wasteful number, since it uses less digits than its factorization.

12525666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8385.

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

The square root of 12525666 is about 3539.1617651642. The cubic root of 12525666 is about 232.2381744479.

The spelling of 12525666 in words is "twelve million, five hundred twenty-five thousand, six hundred sixty-six".