12625606261 has 2 divisors, whose sum is σ = 12625606262. Its totient is φ = 12625606260.

The previous prime is 12625606247. The next prime is 12625606307. The reversal of 12625606261 is 16260652621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9656010225 + 2969596036 = 98265^2 + 54494^2 .

It is an emirp because it is prime and its reverse (16260652621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12625606261 - 2⁹ = 12625605749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12625606261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12635606261) 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 as a sum of consecutive naturals, namely, 6312803130 + 6312803131.

It is an arithmetic number, because the mean of its divisors is an integer number (6312803131).

Almost surely, 2^12625606261 is an apocalyptic number.

It is an amenable number.

12625606261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12625606261 is an equidigital number, since it uses as much as digits as its factorization.

12625606261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 12625606261 in words is "twelve billion, six hundred twenty-five million, six hundred six thousand, two hundred sixty-one".