225236140 has 24 divisors (see below), whose sum is σ = 479660832. Its totient is φ = 88824960.

The previous prime is 225236119. The next prime is 225236147. The reversal of 225236140 is 41632522.

225236140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (225236147) 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, 77889 + ... + 80728.

It is an arithmetic number, because the mean of its divisors is an integer number (19985868).

Almost surely, 2^225236140 is an apocalyptic number.

225236140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225236140 is an abundant number, since it is smaller than the sum of its proper divisors (254424692).

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

225236140 is a wasteful number, since it uses less digits than its factorization.

225236140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158697 (or 158695 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 225236140 is about 15007.8692691534. The cubic root of 225236140 is about 608.4329031156.

Adding to 225236140 its reverse (41632522), we get a palindrome (266868662).

The spelling of 225236140 in words is "two hundred twenty-five million, two hundred thirty-six thousand, one hundred forty".