225401421344 has 48 divisors (see below), whose sum is σ = 488101705056. Its totient is φ = 102455172160.

The previous prime is 225401421263. The next prime is 225401421379. The reversal of 225401421344 is 443124104522.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 225401421344.

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, 2603462 + ... + 2688645.

It is an arithmetic number, because the mean of its divisors is an integer number (10168785522).

Almost surely, 2^225401421344 is an apocalyptic number.

It is an amenable number.

225401421344 is an abundant number, since it is smaller than the sum of its proper divisors (262700283712).

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

225401421344 is an equidigital number, since it uses as much as digits as its factorization.

225401421344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292150 (or 5292120 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 225401421344 its reverse (443124104522), we get a palindrome (668525525866).

The spelling of 225401421344 in words is "two hundred twenty-five billion, four hundred one million, four hundred twenty-one thousand, three hundred forty-four".