225112345440 has 192 divisors, whose sum is σ = 749303654400. Its totient is φ = 56692905984.

The previous prime is 225112345427. The next prime is 225112345487. The reversal of 225112345440 is 44543211522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 743106 + ... + 1001214.

It is an arithmetic number, because the mean of its divisors is an integer number (3902623200).

Almost surely, 2^225112345440 is an apocalyptic number.

225112345440 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 225112345440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374651827200).

225112345440 is an abundant number, since it is smaller than the sum of its proper divisors (524191308960).

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

225112345440 is a wasteful number, since it uses less digits than its factorization.

225112345440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258229 (or 258221 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 225112345440 its reverse (44543211522), we get a palindrome (269655556962).

The spelling of 225112345440 in words is "two hundred twenty-five billion, one hundred twelve million, three hundred forty-five thousand, four hundred forty".