825859 has 4 divisors (see below), whose sum is σ = 829080. Its totient is φ = 822640.

The previous prime is 825857. The next prime is 825883. The reversal of 825859 is 958528.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 825859 - 2¹ = 825857 is a prime.

It is a d-powerful number, because it can be written as 8³ + 2¹⁸ + 8³ + 5⁶ + 5⁶ + 9⁶ .

It is a Duffinian number.

825859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (825857) 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, 1189 + ... + 1750.

It is an arithmetic number, because the mean of its divisors is an integer number (207270).

2⁸²⁵⁸⁵⁹ is an apocalyptic number.

825859 is a deficient number, since it is larger than the sum of its proper divisors (3221).

825859 is a wasteful number, since it uses less digits than its factorization.

825859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220.

The product of its digits is 28800, while the sum is 37.

The square root of 825859 is about 908.7678471425. The cubic root of 825859 is about 93.8214128476.

The spelling of 825859 in words is "eight hundred twenty-five thousand, eight hundred fifty-nine".