125275712657 has 2 divisors, whose sum is σ = 125275712658. Its totient is φ = 125275712656.

The previous prime is 125275712633. The next prime is 125275712677. The reversal of 125275712657 is 756217572521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72191091856 + 53084620801 = 268684^2 + 230401^2 .

It is an emirp because it is prime and its reverse (756217572521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125275712657 - 2¹² = 125275708561 is a prime.

It is not a weakly prime, because it can be changed into another prime (125275712677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62637856328 + 62637856329.

It is an arithmetic number, because the mean of its divisors is an integer number (62637856329).

Almost surely, 2^125275712657 is an apocalyptic number.

It is an amenable number.

125275712657 is a deficient number, since it is larger than the sum of its proper divisors (1).

125275712657 is an equidigital number, since it uses as much as digits as its factorization.

125275712657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2058000, while the sum is 50.

The spelling of 125275712657 in words is "one hundred twenty-five billion, two hundred seventy-five million, seven hundred twelve thousand, six hundred fifty-seven".