225144465 has 48 divisors (see below), whose sum is σ = 451297728. Its totient is φ = 95001984.

The previous prime is 225144383. The next prime is 225144467. The reversal of 225144465 is 564441522.

It is not a de Polignac number, because 225144465 - 2⁹ = 225143953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225144467) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2227 + ... + 21336.

It is an arithmetic number, because the mean of its divisors is an integer number (9402036).

Almost surely, 2^225144465 is an apocalyptic number.

It is an amenable number.

225144465 is an abundant number, since it is smaller than the sum of its proper divisors (226153263).

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

225144465 is a wasteful number, since it uses less digits than its factorization.

225144465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23598 (or 23591 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 225144465 is about 15004.8147272800. The cubic root of 225144465 is about 608.3503443461.

Adding to 225144465 its reverse (564441522), we get a palindrome (789585987).

The spelling of 225144465 in words is "two hundred twenty-five million, one hundred forty-four thousand, four hundred sixty-five".