225520441 has 4 divisors (see below), whose sum is σ = 227845492. Its totient is φ = 223195392.

The previous prime is 225520417. The next prime is 225520469. The reversal of 225520441 is 144025522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144025522 = 2 ⋅72012761.

It can be written as a sum of positive squares in 2 ways, for example, as 164352400 + 61168041 = 12820^2 + 7821^2 .

It is a cyclic number.

It is not a de Polignac number, because 225520441 - 2⁵ = 225520409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225530441) 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, 1162380 + ... + 1162573.

It is an arithmetic number, because the mean of its divisors is an integer number (56961373).

Almost surely, 2^225520441 is an apocalyptic number.

It is an amenable number.

225520441 is a deficient number, since it is larger than the sum of its proper divisors (2325051).

225520441 is an equidigital number, since it uses as much as digits as its factorization.

225520441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325050.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 225520441 is about 15017.3380131100. The cubic root of 225520441 is about 608.6887906389.

Adding to 225520441 its reverse (144025522), we get a palindrome (369545963).

The spelling of 225520441 in words is "two hundred twenty-five million, five hundred twenty thousand, four hundred forty-one".