225510289 has 3 divisors (see below), whose sum is σ = 225525307. Its totient is φ = 225495272.

The previous prime is 225510281. The next prime is 225510323. The reversal of 225510289 is 982015522.

It is a happy number.

The square root of 225510289 is 15017.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 76475025 + 149035264 = 8745^2 + 12208^2 .

It is not a de Polignac number, because 225510289 - 2³ = 225510281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225510281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7509 + ... + 22525.

Almost surely, 2^225510289 is an apocalyptic number.

225510289 is the 15017-th square number.

225510289 is the 7509-th centered octagonal number.

It is an amenable number.

225510289 is a deficient number, since it is larger than the sum of its proper divisors (15018).

225510289 is an frugal number, since it uses more digits than its factorization.

225510289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30034 (or 15017 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The cubic root of 225510289 is about 608.6796569490.

Multiplying 225510289 by its product of nonzero digits (14400), we get a square (3247348161600 = 1802040²).

It can be divided in two parts, 2255 and 10289, that added together give a square (12544 = 112²).

The spelling of 225510289 in words is "two hundred twenty-five million, five hundred ten thousand, two hundred eighty-nine".