225330222033521 has 16 divisors (see below), whose sum is σ = 254188682981376. Its totient is φ = 197890555410000.

The previous prime is 225330222033509. The next prime is 225330222033523. The reversal of 225330222033521 is 125330222033522.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225330222033521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225330222033523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578432645 + ... + 578822066.

It is an arithmetic number, because the mean of its divisors is an integer number (15886792686336).

Almost surely, 2^{225330222033521} is an apocalyptic number.

It is an amenable number.

225330222033521 is a deficient number, since it is larger than the sum of its proper divisors (28858460947855).

225330222033521 is a wasteful number, since it uses less digits than its factorization.

225330222033521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157255324.

The product of its (nonzero) digits is 129600, while the sum is 35.

Subtracting from 225330222033521 its reverse (125330222033522), we obtain a palindrome (99999999999999).

The spelling of 225330222033521 in words is "two hundred twenty-five trillion, three hundred thirty billion, two hundred twenty-two million, thirty-three thousand, five hundred twenty-one".