225543224981 has 4 divisors (see below), whose sum is σ = 225558877152. Its totient is φ = 225527572812.

The previous prime is 225543224957. The next prime is 225543224983. The reversal of 225543224981 is 189422345522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225543224981 - 2¹⁰ = 225543223957 is a prime.

It is a super-2 number, since 2×225543224981² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225543224983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7804451 + ... + 7833296.

It is an arithmetic number, because the mean of its divisors is an integer number (56389719288).

Almost surely, 2^225543224981 is an apocalyptic number.

It is an amenable number.

225543224981 is a deficient number, since it is larger than the sum of its proper divisors (15652171).

225543224981 is a wasteful number, since it uses less digits than its factorization.

225543224981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15652170.

The product of its digits is 1382400, while the sum is 47.

The spelling of 225543224981 in words is "two hundred twenty-five billion, five hundred forty-three million, two hundred twenty-four thousand, nine hundred eighty-one".