125841257137 has 2 divisors, whose sum is σ = 125841257138. Its totient is φ = 125841257136.

The previous prime is 125841257093. The next prime is 125841257149. The reversal of 125841257137 is 731752148521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113616859041 + 12224398096 = 337071^2 + 110564^2 .

It is a cyclic number.

It is not a de Polignac number, because 125841257137 - 2²³ = 125832868529 is a prime.

It is not a weakly prime, because it can be changed into another prime (125841257537) 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, 62920628568 + 62920628569.

It is an arithmetic number, because the mean of its divisors is an integer number (62920628569).

Almost surely, 2^125841257137 is an apocalyptic number.

It is an amenable number.

125841257137 is a deficient number, since it is larger than the sum of its proper divisors (1).

125841257137 is an equidigital number, since it uses as much as digits as its factorization.

125841257137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 46.

The spelling of 125841257137 in words is "one hundred twenty-five billion, eight hundred forty-one million, two hundred fifty-seven thousand, one hundred thirty-seven".