225630420 has 24 divisors (see below), whose sum is σ = 631765344. Its totient is φ = 60168096.

The previous prime is 225630413. The next prime is 225630451. The reversal of 225630420 is 24036522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880194 + ... + 1880313.

It is an arithmetic number, because the mean of its divisors is an integer number (26323556).

Almost surely, 2^225630420 is an apocalyptic number.

225630420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225630420 is an abundant number, since it is smaller than the sum of its proper divisors (406134924).

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

225630420 is a wasteful number, since it uses less digits than its factorization.

225630420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760519 (or 3760517 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 225630420 is about 15020.9993009786. Note that the first 3 decimals coincide. The cubic root of 225630420 is about 608.7877204820.

Adding to 225630420 its reverse (24036522), we get a palindrome (249666942).

The spelling of 225630420 in words is "two hundred twenty-five million, six hundred thirty thousand, four hundred twenty".