225531464 has 16 divisors (see below), whose sum is σ = 426752700. Its totient is φ = 111730752.

The previous prime is 225531437. The next prime is 225531487. The reversal of 225531464 is 464135522.

It can be written as a sum of positive squares in 2 ways, for example, as 192376900 + 33154564 = 13870^2 + 5758^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225531464.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128447 + ... + 130190.

Almost surely, 2^225531464 is an apocalyptic number.

It is an amenable number.

225531464 is a deficient number, since it is larger than the sum of its proper divisors (201221236).

225531464 is a wasteful number, since it uses less digits than its factorization.

225531464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258752 (or 258748 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 225531464 is about 15017.7050177449. The cubic root of 225531464 is about 608.6987076516.

Adding to 225531464 its reverse (464135522), we get a palindrome (689666986).

The spelling of 225531464 in words is "two hundred twenty-five million, five hundred thirty-one thousand, four hundred sixty-four".