825404 has 6 divisors (see below), whose sum is σ = 1444464. Its totient is φ = 412700.

The previous prime is 825403. The next prime is 825413. The reversal of 825404 is 404528.

It is a self number, because there is not a number n which added to its sum of digits gives 825404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103172 + ... + 103179.

It is an arithmetic number, because the mean of its divisors is an integer number (240744).

2⁸²⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

825404 is a deficient number, since it is larger than the sum of its proper divisors (619060).

825404 is a wasteful number, since it uses less digits than its factorization.

825404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206355 (or 206353 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 825404 is about 908.5174736900. The cubic root of 825404 is about 93.8041796456.

The spelling of 825404 in words is "eight hundred twenty-five thousand, four hundred four".