825500789 has 2 divisors, whose sum is σ = 825500790. Its totient is φ = 825500788.

The previous prime is 825500779. The next prime is 825500831. The reversal of 825500789 is 987005528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535922500 + 289578289 = 23150^2 + 17017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825500789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825500729) 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, 412750394 + 412750395.

It is an arithmetic number, because the mean of its divisors is an integer number (412750395).

Almost surely, 2^825500789 is an apocalyptic number.

It is an amenable number.

825500789 is a deficient number, since it is larger than the sum of its proper divisors (1).

825500789 is an equidigital number, since it uses as much as digits as its factorization.

825500789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 825500789 is about 28731.5295276809. The cubic root of 825500789 is about 938.0784607560.

The spelling of 825500789 in words is "eight hundred twenty-five million, five hundred thousand, seven hundred eighty-nine".