225206244481 has 27 divisors (see below), whose sum is σ = 241088300481. Its totient is φ = 210351124104.

The previous prime is 225206244457. The next prime is 225206244521. The reversal of 225206244481 is 184442602522.

It is a happy number.

The square root of 225206244481 is 474559.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 225206244481 - 2²⁹ = 224669373569 is a prime.

It is a super-2 number, since 2×225206244481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225206244281) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 512998060 + ... + 512998498.

Almost surely, 2^225206244481 is an apocalyptic number.

225206244481 is the 474559-th square number.

225206244481 is the 237280-th centered octagonal number.

It is an amenable number.

225206244481 is a deficient number, since it is larger than the sum of its proper divisors (15882056000).

225206244481 is an frugal number, since it uses more digits than its factorization.

225206244481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 40.

The spelling of 225206244481 in words is "two hundred twenty-five billion, two hundred six million, two hundred forty-four thousand, four hundred eighty-one".