225988369 has 4 divisors (see below), whose sum is σ = 228318244. Its totient is φ = 223658496.

The previous prime is 225988313. The next prime is 225988379. The reversal of 225988369 is 963889522.

It is a happy number.

225988369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162180225 + 63808144 = 12735^2 + 7988^2 .

It is a cyclic number.

It is not a de Polignac number, because 225988369 - 2¹⁷ = 225857297 is a prime.

It is a super-2 number, since 2×225988369² = 102141485846560322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225988309) 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, 1164792 + ... + 1164985.

It is an arithmetic number, because the mean of its divisors is an integer number (57079561).

Almost surely, 2^225988369 is an apocalyptic number.

It is an amenable number.

225988369 is a deficient number, since it is larger than the sum of its proper divisors (2329875).

225988369 is an equidigital number, since it uses as much as digits as its factorization.

225988369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329874.

The product of its digits is 1866240, while the sum is 52.

The square root of 225988369 is about 15032.9095320899. The cubic root of 225988369 is about 609.1094853411.

The spelling of 225988369 in words is "two hundred twenty-five million, nine hundred eighty-eight thousand, three hundred sixty-nine".