225400818 has 64 divisors (see below), whose sum is σ = 484162560. Its totient is φ = 69818112.

The previous prime is 225400817. The next prime is 225400823. The reversal of 225400818 is 818004522.

It is not an unprimeable number, because it can be changed into a prime (225400811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1010655 + ... + 1010877.

It is an arithmetic number, because the mean of its divisors is an integer number (7565040).

Almost surely, 2^225400818 is an apocalyptic number.

225400818 is an abundant number, since it is smaller than the sum of its proper divisors (258761742).

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

225400818 is a wasteful number, since it uses less digits than its factorization.

225400818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 225400818 is about 15013.3546551062. The cubic root of 225400818 is about 608.5811491663.

The spelling of 225400818 in words is "two hundred twenty-five million, four hundred thousand, eight hundred eighteen".