125773785315 has 64 divisors (see below), whose sum is σ = 232876062720. Its totient is φ = 64346970240.

The previous prime is 125773785301. The next prime is 125773785323. The reversal of 125773785315 is 513587377521.

It is a happy number.

125773785315 is a `hidden beast` number, since 1 + 2 + 5 + 77 + 37 + 8 + 531 + 5 = 666.

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

It is not a de Polignac number, because 125773785315 - 2⁶ = 125773785251 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 177322 + ... + 531968.

It is an arithmetic number, because the mean of its divisors is an integer number (3638688480).

Almost surely, 2^125773785315 is an apocalyptic number.

125773785315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125773785315 is a deficient number, since it is larger than the sum of its proper divisors (107102277405).

125773785315 is a wasteful number, since it uses less digits than its factorization.

125773785315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354769 (or 354763 counting only the distinct ones).

The product of its digits is 6174000, while the sum is 54.

The spelling of 125773785315 in words is "one hundred twenty-five billion, seven hundred seventy-three million, seven hundred eighty-five thousand, three hundred fifteen".