805925317 has 2 divisors, whose sum is σ = 805925318. Its totient is φ = 805925316.

The previous prime is 805925303. The next prime is 805925357. The reversal of 805925317 is 713529508.

It is an a-pointer prime, because the next prime (805925357) can be obtained adding 805925317 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759057601 + 46867716 = 27551^2 + 6846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805925317 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805925317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805925357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402962658 + 402962659.

It is an arithmetic number, because the mean of its divisors is an integer number (402962659).

Almost surely, 2^805925317 is an apocalyptic number.

It is an amenable number.

805925317 is a deficient number, since it is larger than the sum of its proper divisors (1).

805925317 is an equidigital number, since it uses as much as digits as its factorization.

805925317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 805925317 is about 28388.8238044481. The cubic root of 805925317 is about 930.6040385451.

The spelling of 805925317 in words is "eight hundred five million, nine hundred twenty-five thousand, three hundred seventeen".