12505226602166 has 32 divisors (see below), whose sum is σ = 19776357171648. Its totient is φ = 5918752604160.

The previous prime is 12505226602157. The next prime is 12505226602171. The reversal of 12505226602166 is 66120662250521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85030256 + ... + 85177196.

It is an arithmetic number, because the mean of its divisors is an integer number (618011161614).

Almost surely, 2^{12505226602166} is an apocalyptic number.

12505226602166 is a deficient number, since it is larger than the sum of its proper divisors (7271130569482).

12505226602166 is a wasteful number, since it uses less digits than its factorization.

12505226602166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166136.

The product of its (nonzero) digits is 518400, while the sum is 44.

Adding to 12505226602166 its reverse (66120662250521), we get a palindrome (78625888852687).

The spelling of 12505226602166 in words is "twelve trillion, five hundred five billion, two hundred twenty-six million, six hundred two thousand, one hundred sixty-six".