225445421200 has 120 divisors (see below), whose sum is σ = 548696096480. Its totient is φ = 89007206400.

The previous prime is 225445421111. The next prime is 225445421203. The reversal of 225445421200 is 2124544522.

It is not an unprimeable number, because it can be changed into a prime (225445421203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14697535 + ... + 14712865.

Almost surely, 2^225445421200 is an apocalyptic number.

225445421200 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 225445421200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274348048240).

225445421200 is an abundant number, since it is smaller than the sum of its proper divisors (323250675280).

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

225445421200 is a wasteful number, since it uses less digits than its factorization.

225445421200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15825 (or 15814 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 225445421200 its reverse (2124544522), we get a palindrome (227569965722).

The spelling of 225445421200 in words is "two hundred twenty-five billion, four hundred forty-five million, four hundred twenty-one thousand, two hundred".