225424056 has 128 divisors (see below), whose sum is σ = 697132800. Its totient is φ = 59719680.

The previous prime is 225424019. The next prime is 225424057. The reversal of 225424056 is 650424522.

It is a happy number.

It is a super-2 number, since 2×225424056² = 101632010046982272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225424057) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 63480 + ... + 66936.

It is an arithmetic number, because the mean of its divisors is an integer number (5446350).

Almost surely, 2^225424056 is an apocalyptic number.

225424056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225424056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348566400).

225424056 is an abundant number, since it is smaller than the sum of its proper divisors (471708744).

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

225424056 is a wasteful number, since it uses less digits than its factorization.

225424056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 225424056 is about 15014.1285461395. The cubic root of 225424056 is about 608.6020626112.

Adding to 225424056 its reverse (650424522), we get a palindrome (875848578).

The spelling of 225424056 in words is "two hundred twenty-five million, four hundred twenty-four thousand, fifty-six".