225321305 has 32 divisors (see below), whose sum is σ = 304812288. Its totient is φ = 158457600.

The previous prime is 225321301. The next prime is 225321307. The reversal of 225321305 is 503123522.

225321305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225321305 - 2² = 225321301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225321301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534995 + ... + 535415.

It is an arithmetic number, because the mean of its divisors is an integer number (9525384).

Almost surely, 2^225321305 is an apocalyptic number.

It is an amenable number.

225321305 is a deficient number, since it is larger than the sum of its proper divisors (79490983).

225321305 is a wasteful number, since it uses less digits than its factorization.

225321305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 225321305 is about 15010.7063458053. The cubic root of 225321305 is about 608.5095791745.

Adding to 225321305 its reverse (503123522), we get a palindrome (728444827).

The spelling of 225321305 in words is "two hundred twenty-five million, three hundred twenty-one thousand, three hundred five".