225821695 has 48 divisors (see below), whose sum is σ = 314667360. Its totient is φ = 155232000.

The previous prime is 225821689. The next prime is 225821749. The reversal of 225821695 is 596128522.

It is not a de Polignac number, because 225821695 - 2¹¹ = 225819647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1070140 + ... + 1070350.

It is an arithmetic number, because the mean of its divisors is an integer number (6555570).

Almost surely, 2^225821695 is an apocalyptic number.

225821695 is a deficient number, since it is larger than the sum of its proper divisors (88845665).

225821695 is a wasteful number, since it uses less digits than its factorization.

225821695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 317 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 225821695 is about 15027.3648721258. The cubic root of 225821695 is about 608.9597022883.

The spelling of 225821695 in words is "two hundred twenty-five million, eight hundred twenty-one thousand, six hundred ninety-five".