225711345 has 16 divisors (see below), whose sum is σ = 361811520. Its totient is φ = 120154944.

The previous prime is 225711323. The next prime is 225711347. The reversal of 225711345 is 543117522.

225711345 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 225711345 - 2⁵ = 225711313 is a prime.

It is a super-2 number, since 2×225711345² = 101891222523418050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225711347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5550 + ... + 21959.

It is an arithmetic number, because the mean of its divisors is an integer number (22613220).

Almost surely, 2^225711345 is an apocalyptic number.

It is an amenable number.

225711345 is a deficient number, since it is larger than the sum of its proper divisors (136100175).

225711345 is a wasteful number, since it uses less digits than its factorization.

225711345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28064.

The product of its digits is 8400, while the sum is 30.

The square root of 225711345 is about 15023.6927883926. The cubic root of 225711345 is about 608.8604947374.

Adding to 225711345 its reverse (543117522), we get a palindrome (768828867).

The spelling of 225711345 in words is "two hundred twenty-five million, seven hundred eleven thousand, three hundred forty-five".