825863 has 4 divisors (see below), whose sum is σ = 846048. Its totient is φ = 805680.

The previous prime is 825857. The next prime is 825883. The reversal of 825863 is 368528.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825863 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 (825883) 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, 10031 + ... + 10112.

It is an arithmetic number, because the mean of its divisors is an integer number (211512).

2⁸²⁵⁸⁶³ is an apocalyptic number.

825863 is a deficient number, since it is larger than the sum of its proper divisors (20185).

825863 is a wasteful number, since it uses less digits than its factorization.

825863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20184.

The product of its digits is 11520, while the sum is 32.

The square root of 825863 is about 908.7700479219. The cubic root of 825863 is about 93.8215643202.

The spelling of 825863 in words is "eight hundred twenty-five thousand, eight hundred sixty-three".