225224120 has 32 divisors (see below), whose sum is σ = 552823920. Its totient is φ = 81899520.

The previous prime is 225224117. The next prime is 225224123. The reversal of 225224120 is 21422522.

It is an interprime number because it is at equal distance from previous prime (225224117) and next prime (225224123).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 225224092 and 225224101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225224123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255497 + ... + 256376.

Almost surely, 2^225224120 is an apocalyptic number.

225224120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225224120 is an abundant number, since it is smaller than the sum of its proper divisors (327599800).

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

225224120 is a wasteful number, since it uses less digits than its factorization.

225224120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511895 (or 511891 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 225224120 is about 15007.4688072306. The cubic root of 225224120 is about 608.4220796696.

Adding to 225224120 its reverse (21422522), we get a palindrome (246646642).

The spelling of 225224120 in words is "two hundred twenty-five million, two hundred twenty-four thousand, one hundred twenty".