225532053221 has 4 divisors (see below), whose sum is σ = 225810145344. Its totient is φ = 225253961100.

The previous prime is 225532053191. The next prime is 225532053233. The reversal of 225532053221 is 122350235522.

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 225532053221 - 2¹⁴ = 225532036837 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 (225532053521) 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, 139044845 + ... + 139046466.

It is an arithmetic number, because the mean of its divisors is an integer number (56452536336).

Almost surely, 2^225532053221 is an apocalyptic number.

It is an amenable number.

225532053221 is a deficient number, since it is larger than the sum of its proper divisors (278092123).

225532053221 is an equidigital number, since it uses as much as digits as its factorization.

225532053221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278092122.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 225532053221 its reverse (122350235522), we get a palindrome (347882288743).

The spelling of 225532053221 in words is "two hundred twenty-five billion, five hundred thirty-two million, fifty-three thousand, two hundred twenty-one".