225504311 has 4 divisors (see below), whose sum is σ = 225547224. Its totient is φ = 225461400.

The previous prime is 225504299. The next prime is 225504359. The reversal of 225504311 is 113405522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113405522 = 2 ⋅56702761.

It is a cyclic number.

It is not a de Polignac number, because 225504311 - 2⁶ = 225504247 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 (225504361) 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, 12260 + ... + 24521.

It is an arithmetic number, because the mean of its divisors is an integer number (56386806).

Almost surely, 2^225504311 is an apocalyptic number.

225504311 is a deficient number, since it is larger than the sum of its proper divisors (42913).

225504311 is an equidigital number, since it uses as much as digits as its factorization.

225504311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42912.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 225504311 is about 15016.8009575941. The cubic root of 225504311 is about 608.6742784522.

Adding to 225504311 its reverse (113405522), we get a palindrome (338909833).

The spelling of 225504311 in words is "two hundred twenty-five million, five hundred four thousand, three hundred eleven".