12724166625 has 16 divisors (see below), whose sum is σ = 21173013888. Its totient is φ = 6786222000.

The previous prime is 12724166573. The next prime is 12724166629. The reversal of 12724166625 is 52666142721.

It is not a de Polignac number, because 12724166625 - 2¹¹ = 12724164577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12724166629) 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, 16965181 + ... + 16965930.

It is an arithmetic number, because the mean of its divisors is an integer number (1323313368).

Almost surely, 2^12724166625 is an apocalyptic number.

12724166625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12724166625 is a deficient number, since it is larger than the sum of its proper divisors (8448847263).

12724166625 is an equidigital number, since it uses as much as digits as its factorization.

12724166625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33931129 (or 33931119 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The spelling of 12724166625 in words is "twelve billion, seven hundred twenty-four million, one hundred sixty-six thousand, six hundred twenty-five".