12625514564477 has 2 divisors, whose sum is σ = 12625514564478. Its totient is φ = 12625514564476.

The previous prime is 12625514564413. The next prime is 12625514564567. The reversal of 12625514564477 is 77446541552621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8834008506436 + 3791506058041 = 2972206^2 + 1947179^2 .

It is an emirp because it is prime and its reverse (77446541552621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12625514564477 - 2⁶ = 12625514564413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12625514564407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312757282238 + 6312757282239.

It is an arithmetic number, because the mean of its divisors is an integer number (6312757282239).

Almost surely, 2^{12625514564477} is an apocalyptic number.

It is an amenable number.

12625514564477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12625514564477 is an equidigital number, since it uses as much as digits as its factorization.

12625514564477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448000, while the sum is 59.

The spelling of 12625514564477 in words is "twelve trillion, six hundred twenty-five billion, five hundred fourteen million, five hundred sixty-four thousand, four hundred seventy-seven".