125405511313 has 2 divisors, whose sum is σ = 125405511314. Its totient is φ = 125405511312.

The previous prime is 125405511281. The next prime is 125405511347. The reversal of 125405511313 is 313115504521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106208854609 + 19196656704 = 325897^2 + 138552^2 .

It is a cyclic number.

It is not a de Polignac number, because 125405511313 - 2⁵ = 125405511281 is a prime.

It is not a weakly prime, because it can be changed into another prime (125405511373) 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, 62702755656 + 62702755657.

It is an arithmetic number, because the mean of its divisors is an integer number (62702755657).

Almost surely, 2^125405511313 is an apocalyptic number.

It is an amenable number.

125405511313 is a deficient number, since it is larger than the sum of its proper divisors (1).

125405511313 is an equidigital number, since it uses as much as digits as its factorization.

125405511313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 125405511313 in words is "one hundred twenty-five billion, four hundred five million, five hundred eleven thousand, three hundred thirteen".