825830 has 16 divisors (see below), whose sum is σ = 1496880. Its totient is φ = 328032.

The previous prime is 825829. The next prime is 825857. The reversal of 825830 is 38528.

It is a self number, because there is not a number n which added to its sum of digits gives 825830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (93555).

2⁸²⁵⁸³⁰ is an apocalyptic number.

825830 is a deficient number, since it is larger than the sum of its proper divisors (671050).

825830 is a wasteful number, since it uses less digits than its factorization.

825830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 825830 is about 908.7518913323. The cubic root of 825830 is about 93.8203146566.

The spelling of 825830 in words is "eight hundred twenty-five thousand, eight hundred thirty".