225542013433421 has 8 divisors (see below), whose sum is σ = 233338323007800. Its totient is φ = 217746970443520.

The previous prime is 225542013433393. The next prime is 225542013433439. The reversal of 225542013433421 is 124334310245522.

It can be written as a sum of positive squares in 4 ways, for example, as 161081508020521 + 64460505412900 = 12691789^2 + 8028730^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225542013433421 - 2⁶ = 225542013433357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225542013433441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316283816 + ... + 316996113.

It is an arithmetic number, because the mean of its divisors is an integer number (29167290375975).

Almost surely, 2^{225542013433421} is an apocalyptic number.

It is an amenable number.

225542013433421 is a deficient number, since it is larger than the sum of its proper divisors (7796309574379).

225542013433421 is a wasteful number, since it uses less digits than its factorization.

225542013433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633292239.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 225542013433421 its reverse (124334310245522), we get a palindrome (349876323678943).

The spelling of 225542013433421 in words is "two hundred twenty-five trillion, five hundred forty-two billion, thirteen million, four hundred thirty-three thousand, four hundred twenty-one".