845857225 has 6 divisors (see below), whose sum is σ = 1048862990. Its totient is φ = 676685760.

The previous prime is 845857213. The next prime is 845857247. The reversal of 845857225 is 522758548.

It can be written as a sum of positive squares in 3 ways, for example, as 71014329 + 774842896 = 8427^2 + 27836^2 .

It is not a de Polignac number, because 845857225 - 2⁵ = 845857193 is a prime.

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, 16917120 + ... + 16917169.

Almost surely, 2^845857225 is an apocalyptic number.

It is an amenable number.

845857225 is a deficient number, since it is larger than the sum of its proper divisors (203005765).

845857225 is a wasteful number, since it uses less digits than its factorization.

845857225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33834299 (or 33834294 counting only the distinct ones).

The product of its digits is 896000, while the sum is 46.

The square root of 845857225 is about 29083.6246881299. The cubic root of 845857225 is about 945.7267814962.

The spelling of 845857225 in words is "eight hundred forty-five million, eight hundred fifty-seven thousand, two hundred twenty-five".