805825 has 6 divisors (see below), whose sum is σ = 999254. Its totient is φ = 644640.

The previous prime is 805811. The next prime is 805843. The reversal of 805825 is 528508.

It can be written as a sum of positive squares in 3 ways, for example, as 106929 + 698896 = 327^2 + 836^2 .

It is not a de Polignac number, because 805825 - 2⁹ = 805313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 805793 and 805802.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16092 + ... + 16141.

2⁸⁰⁵⁸²⁵ is an apocalyptic number.

It is an amenable number.

805825 is a deficient number, since it is larger than the sum of its proper divisors (193429).

805825 is a wasteful number, since it uses less digits than its factorization.

805825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32243 (or 32238 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 805825 is about 897.6775590378. The cubic root of 805825 is about 93.0565424844.

The spelling of 805825 in words is "eight hundred five thousand, eight hundred twenty-five".