825857693 has 2 divisors, whose sum is σ = 825857694. Its totient is φ = 825857692.

The previous prime is 825857689. The next prime is 825857771. The reversal of 825857693 is 396758528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431517529 + 394340164 = 20773^2 + 19858^2 .

It is a cyclic number.

It is not a de Polignac number, because 825857693 - 2² = 825857689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825857623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412928846 + 412928847.

It is an arithmetic number, because the mean of its divisors is an integer number (412928847).

Almost surely, 2^825857693 is an apocalyptic number.

It is an amenable number.

825857693 is a deficient number, since it is larger than the sum of its proper divisors (1).

825857693 is an equidigital number, since it uses as much as digits as its factorization.

825857693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 53.

The square root of 825857693 is about 28737.7398728571. The cubic root of 825857693 is about 938.2136335386.

The spelling of 825857693 in words is "eight hundred twenty-five million, eight hundred fifty-seven thousand, six hundred ninety-three".