825512717 has 2 divisors, whose sum is σ = 825512718. Its totient is φ = 825512716.

The previous prime is 825512713. The next prime is 825512729. The reversal of 825512717 is 717215528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 437186281 + 388326436 = 20909^2 + 19706^2 .

It is a cyclic number.

It is not a de Polignac number, because 825512717 - 2² = 825512713 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825512713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412756358 + 412756359.

It is an arithmetic number, because the mean of its divisors is an integer number (412756359).

Almost surely, 2^825512717 is an apocalyptic number.

It is an amenable number.

825512717 is a deficient number, since it is larger than the sum of its proper divisors (1).

825512717 is an equidigital number, since it uses as much as digits as its factorization.

825512717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 38.

The square root of 825512717 is about 28731.7371037673. The cubic root of 825512717 is about 938.0829789613.

The spelling of 825512717 in words is "eight hundred twenty-five million, five hundred twelve thousand, seven hundred seventeen".