805625 has 10 divisors (see below), whose sum is σ = 1007490. Its totient is φ = 644000.

The previous prime is 805589. The next prime is 805633. The reversal of 805625 is 526508.

It can be written as a sum of positive squares in 5 ways, for example, as 190969 + 614656 = 437^2 + 784^2 .

It is not a de Polignac number, because 805625 - 2⁸ = 805369 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 805594 and 805603.

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 9 ways as a sum of consecutive naturals, for example, 20 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (100749).

2⁸⁰⁵⁶²⁵ is an apocalyptic number.

It is an amenable number.

805625 is a deficient number, since it is larger than the sum of its proper divisors (201865).

805625 is an equidigital number, since it uses as much as digits as its factorization.

805625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 805625 is about 897.5661535508. The cubic root of 805625 is about 93.0488431913.

The spelling of 805625 in words is "eight hundred five thousand, six hundred twenty-five".