825897 has 4 divisors (see below), whose sum is σ = 1101200. Its totient is φ = 550596.

The previous prime is 825889. The next prime is 825919. The reversal of 825897 is 798528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 825897 - 2³ = 825889 is a prime.

It is a d-powerful number, because it can be written as 8² + 2¹⁰ + 8³ + 5² + 9³ + 7⁷ .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137647 + ... + 137652.

It is an arithmetic number, because the mean of its divisors is an integer number (275300).

2⁸²⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

825897 is a deficient number, since it is larger than the sum of its proper divisors (275303).

825897 is a wasteful number, since it uses less digits than its factorization.

825897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275302.

The product of its digits is 40320, while the sum is 39.

The square root of 825897 is about 908.7887543318. The cubic root of 825897 is about 93.8228518176.

The spelling of 825897 in words is "eight hundred twenty-five thousand, eight hundred ninety-seven".