225618340 has 24 divisors (see below), whose sum is σ = 475558272. Its totient is φ = 89912160.

The previous prime is 225618329. The next prime is 225618353. The reversal of 225618340 is 43816522.

225618340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 15394 + ... + 26233.

It is an arithmetic number, because the mean of its divisors is an integer number (19814928).

Almost surely, 2^225618340 is an apocalyptic number.

225618340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225618340 is an abundant number, since it is smaller than the sum of its proper divisors (249939932).

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

225618340 is a wasteful number, since it uses less digits than its factorization.

225618340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41907 (or 41905 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 225618340 is about 15020.5971918563. The cubic root of 225618340 is about 608.7768556838.

The spelling of 225618340 in words is "two hundred twenty-five million, six hundred eighteen thousand, three hundred forty".