125265503263871 has 2 divisors, whose sum is σ = 125265503263872. Its totient is φ = 125265503263870.

The previous prime is 125265503263829. The next prime is 125265503263933. The reversal of 125265503263871 is 178362305562521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125265503263871 - 2²⁶ = 125265436155007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125265503263811) 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, 62632751631935 + 62632751631936.

It is an arithmetic number, because the mean of its divisors is an integer number (62632751631936).

Almost surely, 2^{125265503263871} is an apocalyptic number.

125265503263871 is a deficient number, since it is larger than the sum of its proper divisors (1).

125265503263871 is an equidigital number, since it uses as much as digits as its factorization.

125265503263871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 125265503263871 in words is "one hundred twenty-five trillion, two hundred sixty-five billion, five hundred three million, two hundred sixty-three thousand, eight hundred seventy-one".