12208451868125 has 10 divisors (see below), whose sum is σ = 15255681455190. Its totient is φ = 9766761494000.

The previous prime is 12208451868113. The next prime is 12208451868127. The reversal of 12208451868125 is 52186815480221.

It can be written as a sum of positive squares in 5 ways, for example, as 3236336236324 + 8972115631801 = 1798982^2 + 2995349^2 .

It is not a de Polignac number, because 12208451868125 - 2⁸ = 12208451867869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208451868127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9766760870 + ... + 9766762119.

It is an arithmetic number, because the mean of its divisors is an integer number (1525568145519).

Almost surely, 2^{12208451868125} is an apocalyptic number.

It is an amenable number.

12208451868125 is a deficient number, since it is larger than the sum of its proper divisors (3047229587065).

12208451868125 is an frugal number, since it uses more digits than its factorization.

12208451868125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19533523009 (or 19533522994 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 53.

The spelling of 12208451868125 in words is "twelve trillion, two hundred eight billion, four hundred fifty-one million, eight hundred sixty-eight thousand, one hundred twenty-five".