225603324440 has 128 divisors (see below), whose sum is σ = 556820308800. Its totient is φ = 81755166720.

The previous prime is 225603324433. The next prime is 225603324473. The reversal of 225603324440 is 44423306522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 225603324440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20028410 + ... + 20039670.

Almost surely, 2^225603324440 is an apocalyptic number.

225603324440 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 225603324440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278410154400).

225603324440 is an abundant number, since it is smaller than the sum of its proper divisors (331216984360).

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

225603324440 is a wasteful number, since it uses less digits than its factorization.

225603324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11997 (or 11993 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

The spelling of 225603324440 in words is "two hundred twenty-five billion, six hundred three million, three hundred twenty-four thousand, four hundred forty".