131717763825 has 12 divisors (see below), whose sum is σ = 217773369648. Its totient is φ = 70249474000.

The previous prime is 131717763809. The next prime is 131717763829. The reversal of 131717763825 is 528367717131.

It is not a de Polignac number, because 131717763825 - 2⁴ = 131717763809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131717763829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 878118351 + ... + 878118500.

It is an arithmetic number, because the mean of its divisors is an integer number (18147780804).

Almost surely, 2^131717763825 is an apocalyptic number.

131717763825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131717763825 is a deficient number, since it is larger than the sum of its proper divisors (86055605823).

131717763825 is a wasteful number, since it uses less digits than its factorization.

131717763825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756236864 (or 1756236859 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 51.

The spelling of 131717763825 in words is "one hundred thirty-one billion, seven hundred seventeen million, seven hundred sixty-three thousand, eight hundred twenty-five".