825889069 has 2 divisors, whose sum is σ = 825889070. Its totient is φ = 825889068.

The previous prime is 825889061. The next prime is 825889079. The reversal of 825889069 is 960988528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444155625 + 381733444 = 21075^2 + 19538^2 .

It is a cyclic number.

It is not a de Polignac number, because 825889069 - 2³ = 825889061 is a prime.

It is a super-2 number, since 2×825889069² = 1364185508587373522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825889061) 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, 412944534 + 412944535.

It is an arithmetic number, because the mean of its divisors is an integer number (412944535).

Almost surely, 2^825889069 is an apocalyptic number.

It is an amenable number.

825889069 is a deficient number, since it is larger than the sum of its proper divisors (1).

825889069 is an equidigital number, since it uses as much as digits as its factorization.

825889069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The square root of 825889069 is about 28738.2857700316. The cubic root of 825889069 is about 938.2255149310.

The spelling of 825889069 in words is "eight hundred twenty-five million, eight hundred eighty-nine thousand, sixty-nine".