845225 has 6 divisors (see below), whose sum is σ = 1048110. Its totient is φ = 676160.

The previous prime is 845219. The next prime is 845231. The reversal of 845225 is 522548.

It is an interprime number because it is at equal distance from previous prime (845219) and next prime (845231).

It can be written as a sum of positive squares in 3 ways, for example, as 65536 + 779689 = 256^2 + 883^2 .

It is not a de Polignac number, because 845225 - 2⁴ = 845209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 845194 and 845203.

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 5 ways as a sum of consecutive naturals, for example, 16880 + ... + 16929.

It is an arithmetic number, because the mean of its divisors is an integer number (174685).

2⁸⁴⁵²²⁵ is an apocalyptic number.

It is an amenable number.

845225 is a deficient number, since it is larger than the sum of its proper divisors (202885).

845225 is a wasteful number, since it uses less digits than its factorization.

845225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33819 (or 33814 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 845225 is about 919.3611912627. The cubic root of 845225 is about 94.5491099033.

The spelling of 845225 in words is "eight hundred forty-five thousand, two hundred twenty-five".