125304668677 has 4 divisors (see below), whose sum is σ = 125305412076. Its totient is φ = 125303925280.

The previous prime is 125304668627. The next prime is 125304668701. The reversal of 125304668677 is 776866403521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 45978509476 + 79326159201 = 214426^2 + 281649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125304668677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125304668627) 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 in 3 ways as a sum of consecutive naturals, for example, 15777 + ... + 500857.

It is an arithmetic number, because the mean of its divisors is an integer number (31326353019).

Almost surely, 2^125304668677 is an apocalyptic number.

It is an amenable number.

125304668677 is a deficient number, since it is larger than the sum of its proper divisors (743399).

125304668677 is an equidigital number, since it uses as much as digits as its factorization.

125304668677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743398.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 125304668677 in words is "one hundred twenty-five billion, three hundred four million, six hundred sixty-eight thousand, six hundred seventy-seven".