225213424 has 20 divisors (see below), whose sum is σ = 455323536. Its totient is φ = 107710592.

The previous prime is 225213397. The next prime is 225213463. The reversal of 225213424 is 424312522.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305629 + ... + 306364.

Almost surely, 2^225213424 is an apocalyptic number.

It is an amenable number.

225213424 is an abundant number, since it is smaller than the sum of its proper divisors (230110112).

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

225213424 is a wasteful number, since it uses less digits than its factorization.

225213424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612024 (or 612018 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 225213424 is about 15007.1124471032. The cubic root of 225213424 is about 608.4124480997.

Adding to 225213424 its reverse (424312522), we get a palindrome (649525946).

The spelling of 225213424 in words is "two hundred twenty-five million, two hundred thirteen thousand, four hundred twenty-four".