858225 has 12 divisors (see below), whose sum is σ = 1419056. Its totient is φ = 457680.

The previous prime is 858223. The next prime is 858233. The reversal of 858225 is 522858.

It is not a de Polignac number, because 858225 - 2¹ = 858223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 858192 and 858201.

It is not an unprimeable number, because it can be changed into a prime (858223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5647 + ... + 5796.

2⁸⁵⁸²²⁵ is an apocalyptic number.

It is an amenable number.

858225 is a deficient number, since it is larger than the sum of its proper divisors (560831).

858225 is a wasteful number, since it uses less digits than its factorization.

858225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456 (or 11451 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 858225 is about 926.4043393681. The cubic root of 858225 is about 95.0313839061.

The spelling of 858225 in words is "eight hundred fifty-eight thousand, two hundred twenty-five".