225434140 has 12 divisors (see below), whose sum is σ = 473411736. Its totient is φ = 90173648.

The previous prime is 225434123. The next prime is 225434141. The reversal of 225434140 is 41434522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225434141) 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 3 ways as a sum of consecutive naturals, for example, 5635834 + ... + 5635873.

It is an arithmetic number, because the mean of its divisors is an integer number (39450978).

Almost surely, 2^225434140 is an apocalyptic number.

225434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225434140 is an abundant number, since it is smaller than the sum of its proper divisors (247977596).

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

225434140 is a wasteful number, since it uses less digits than its factorization.

225434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11271716 (or 11271714 counting only the distinct ones).

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

The square root of 225434140 is about 15014.4643594102. The cubic root of 225434140 is about 608.6111374364.

Adding to 225434140 its reverse (41434522), we get a palindrome (266868662).

The spelling of 225434140 in words is "two hundred twenty-five million, four hundred thirty-four thousand, one hundred forty".