825775589 has 2 divisors, whose sum is σ = 825775590. Its totient is φ = 825775588.

The previous prime is 825775567. The next prime is 825775591. The reversal of 825775589 is 985577528.

It is a happy number.

825775589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561453025 + 264322564 = 23695^2 + 16258^2 .

It is a cyclic number.

It is not a de Polignac number, because 825775589 - 2²⁴ = 808998373 is a prime.

Together with 825775591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825775529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412887794 + 412887795.

It is an arithmetic number, because the mean of its divisors is an integer number (412887795).

Almost surely, 2^825775589 is an apocalyptic number.

It is an amenable number.

825775589 is a deficient number, since it is larger than the sum of its proper divisors (1).

825775589 is an equidigital number, since it uses as much as digits as its factorization.

825775589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056000, while the sum is 56.

The square root of 825775589 is about 28736.3113325284. The cubic root of 825775589 is about 938.1825411580.

The spelling of 825775589 in words is "eight hundred twenty-five million, seven hundred seventy-five thousand, five hundred eighty-nine".