12625403977 has 2 divisors, whose sum is σ = 12625403978. Its totient is φ = 12625403976.

The previous prime is 12625403971. The next prime is 12625404017. The reversal of 12625403977 is 77930452621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10439934976 + 2185469001 = 102176^2 + 46749^2 .

It is a cyclic number.

It is not a de Polignac number, because 12625403977 - 2³ = 12625403969 is a prime.

It is not a weakly prime, because it can be changed into another prime (12625403971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312701988 + 6312701989.

It is an arithmetic number, because the mean of its divisors is an integer number (6312701989).

Almost surely, 2^12625403977 is an apocalyptic number.

It is an amenable number.

12625403977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12625403977 is an equidigital number, since it uses as much as digits as its factorization.

12625403977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 12625403977 in words is "twelve billion, six hundred twenty-five million, four hundred three thousand, nine hundred seventy-seven".