805025 has 12 divisors (see below), whose sum is σ = 1075452. Its totient is φ = 594240.

The previous prime is 805019. The next prime is 805027. The reversal of 805025 is 520508.

It can be written as a sum of positive squares in 6 ways, for example, as 87616 + 717409 = 296^2 + 847^2 .

It is a de Polignac number, because none of the positive numbers 2^k-805025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 804988 and 805006.

It is not an unprimeable number, because it can be changed into a prime (805027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 914 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (89621).

2⁸⁰⁵⁰²⁵ is an apocalyptic number.

It is an amenable number.

805025 is a deficient number, since it is larger than the sum of its proper divisors (270427).

805025 is a wasteful number, since it uses less digits than its factorization.

805025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 805025 is about 897.2318540935. The cubic root of 805025 is about 93.0257376639.

The spelling of 805025 in words is "eight hundred five thousand, twenty-five".