225281322 has 72 divisors (see below), whose sum is σ = 571648896. Its totient is φ = 63930384.

The previous prime is 225281311. The next prime is 225281369. The reversal of 225281322 is 223182522.

225281322 is a `hidden beast` number, since 2 + 2 + 528 + 132 + 2 = 666.

225281322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142983 + ... + 144549.

It is an arithmetic number, because the mean of its divisors is an integer number (7939568).

Almost surely, 2^225281322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225281322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285824448).

225281322 is an abundant number, since it is smaller than the sum of its proper divisors (346367574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225281322 is a wasteful number, since it uses less digits than its factorization.

225281322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752 (or 1742 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 225281322 is about 15009.3744706433. The cubic root of 225281322 is about 608.4735839428.

The spelling of 225281322 in words is "two hundred twenty-five million, two hundred eighty-one thousand, three hundred twenty-two".