825585289 has 9 divisors (see below), whose sum is σ = 841543437. Its totient is φ = 809925804.

The previous prime is 825585281. The next prime is 825585301. The reversal of 825585289 is 982585528.

It is a happy number.

The square root of 825585289 is 28733.

It is a perfect power (a square), and thus also a powerful number.

825585289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 825585289 - 2³ = 825585281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825585281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1695004 + ... + 1695490.

Almost surely, 2^825585289 is an apocalyptic number.

825585289 is the 28733-rd square number.

825585289 is the 14367-th centered octagonal number.

It is an amenable number.

825585289 is a deficient number, since it is larger than the sum of its proper divisors (15958148).

825585289 is an frugal number, since it uses more digits than its factorization.

825585289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 546 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 52.

The cubic root of 825585289 is about 938.1104675598.

The spelling of 825585289 in words is "eight hundred twenty-five million, five hundred eighty-five thousand, two hundred eighty-nine".