925681785817 has 2 divisors, whose sum is σ = 925681785818. Its totient is φ = 925681785816.

The previous prime is 925681785779. The next prime is 925681785851. The reversal of 925681785817 is 718587186529.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 791781412041 + 133900373776 = 889821^2 + 365924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-925681785817 is a prime.

It is not a weakly prime, because it can be changed into another prime (925681789817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462840892908 + 462840892909.

It is an arithmetic number, because the mean of its divisors is an integer number (462840892909).

Almost surely, 2^925681785817 is an apocalyptic number.

It is an amenable number.

925681785817 is a deficient number, since it is larger than the sum of its proper divisors (1).

925681785817 is an equidigital number, since it uses as much as digits as its factorization.

925681785817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67737600, while the sum is 67.

The spelling of 925681785817 in words is "nine hundred twenty-five billion, six hundred eighty-one million, seven hundred eighty-five thousand, eight hundred seventeen".