225430140 has 96 divisors (see below), whose sum is σ = 701761536. Its totient is φ = 53694720.

The previous prime is 225430129. The next prime is 225430169. The reversal of 225430140 is 41034522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19519 + ... + 28841.

It is an arithmetic number, because the mean of its divisors is an integer number (7310016).

Almost surely, 2^225430140 is an apocalyptic number.

225430140 is a gapful number since it is divisible by the number (20) 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 225430140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350880768).

225430140 is an abundant number, since it is smaller than the sum of its proper divisors (476331396).

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

225430140 is a wasteful number, since it uses less digits than its factorization.

225430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9379 (or 9377 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 225430140 is about 15014.3311539342. The cubic root of 225430140 is about 608.6075377761.

Adding to 225430140 its reverse (41034522), we get a palindrome (266464662).

The spelling of 225430140 in words is "two hundred twenty-five million, four hundred thirty thousand, one hundred forty".