125773785317 has 8 divisors (see below), whose sum is σ = 128153202840. Its totient is φ = 123394602240.

The previous prime is 125773785301. The next prime is 125773785323. The reversal of 125773785317 is 713587377521.

It is a Cunningham number, because it is equal to 354646²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 58838264356 + 66935520961 = 242566^2 + 258719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125773785317 - 2⁴ = 125773785301 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 (125773785817) 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 in 7 ways as a sum of consecutive naturals, for example, 1334609 + ... + 1425737.

It is an arithmetic number, because the mean of its divisors is an integer number (16019150355).

Almost surely, 2^125773785317 is an apocalyptic number.

It is an amenable number.

125773785317 is a deficient number, since it is larger than the sum of its proper divisors (2379417523).

125773785317 is an equidigital number, since it uses as much as digits as its factorization.

125773785317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117223.

The product of its digits is 8643600, while the sum is 56.

The spelling of 125773785317 in words is "one hundred twenty-five billion, seven hundred seventy-three million, seven hundred eighty-five thousand, three hundred seventeen".