12720674425 has 12 divisors (see below), whose sum is σ = 16071253740. Its totient is φ = 9984528320.

The previous prime is 12720674419. The next prime is 12720674429. The reversal of 12720674425 is 52447602721.

It can be written as a sum of positive squares in 6 ways, for example, as 561642601 + 12159031824 = 23699^2 + 110268^2 .

It is not a de Polignac number, because 12720674425 - 2⁹ = 12720673913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12720674429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4798930 + ... + 4801579.

It is an arithmetic number, because the mean of its divisors is an integer number (1339271145).

Almost surely, 2^12720674425 is an apocalyptic number.

It is an amenable number.

12720674425 is a deficient number, since it is larger than the sum of its proper divisors (3350579315).

12720674425 is an equidigital number, since it uses as much as digits as its factorization.

12720674425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600572 (or 9600567 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 12720674425 in words is "twelve billion, seven hundred twenty million, six hundred seventy-four thousand, four hundred twenty-five".