12025866 has 16 divisors (see below), whose sum is σ = 24300864. Its totient is φ = 3967104.

The previous prime is 12025823. The next prime is 12025873. The reversal of 12025866 is 66852021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9750 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (1518804).

Almost surely, 2^12025866 is an apocalyptic number.

12025866 is an abundant number, since it is smaller than the sum of its proper divisors (12274998).

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

12025866 is a wasteful number, since it uses less digits than its factorization.

12025866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20765.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12025866 is about 3467.8330409638. The cubic root of 12025866 is about 229.1072258987.

Adding to 12025866 its reverse (66852021), we get a palindrome (78877887).

The spelling of 12025866 in words is "twelve million, twenty-five thousand, eight hundred sixty-six".