12819747625 has 8 divisors (see below), whose sum is σ = 15999045192. Its totient is φ = 10255798000.

The previous prime is 12819747581. The next prime is 12819747631. The reversal of 12819747625 is 52674791821.

It can be written as a sum of positive squares in 4 ways, for example, as 685182976 + 12134564649 = 26176^2 + 110157^2 .

It is not a de Polignac number, because 12819747625 - 2⁷ = 12819747497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51278866 + ... + 51279115.

It is an arithmetic number, because the mean of its divisors is an integer number (1999880649).

Almost surely, 2^12819747625 is an apocalyptic number.

It is an amenable number.

12819747625 is a deficient number, since it is larger than the sum of its proper divisors (3179297567).

12819747625 is an equidigital number, since it uses as much as digits as its factorization.

12819747625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102557996 (or 102557986 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The spelling of 12819747625 in words is "twelve billion, eight hundred nineteen million, seven hundred forty-seven thousand, six hundred twenty-five".