825832909 has 16 divisors (see below), whose sum is σ = 919724544. Its totient is φ = 735134400.

The previous prime is 825832907. The next prime is 825832927. The reversal of 825832909 is 909238528.

It is not a de Polignac number, because 825832909 - 2¹ = 825832907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825832907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384292 + ... + 386434.

It is an arithmetic number, because the mean of its divisors is an integer number (57482784).

Almost surely, 2^825832909 is an apocalyptic number.

It is an amenable number.

825832909 is a deficient number, since it is larger than the sum of its proper divisors (93891635).

825832909 is a wasteful number, since it uses less digits than its factorization.

825832909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 825832909 is about 28737.3086596501. The cubic root of 825832909 is about 938.2042481769.

The spelling of 825832909 in words is "eight hundred twenty-five million, eight hundred thirty-two thousand, nine hundred nine".