225249 has 4 divisors (see below), whose sum is σ = 300336. Its totient is φ = 150164.

The previous prime is 225241. The next prime is 225257. The reversal of 225249 is 942522.

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 an interprime number because it is at equal distance from previous prime (225241) and next prime (225257).

It is a cyclic number.

It is not a de Polignac number, because 225249 - 2³ = 225241 is a prime.

It is a super-3 number, since 3×225249³ = 34285451223339747, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (225241) 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, 37539 + ... + 37544.

It is an arithmetic number, because the mean of its divisors is an integer number (75084).

2²²⁵²⁴⁹ is an apocalyptic number.

It is an amenable number.

225249 is a deficient number, since it is larger than the sum of its proper divisors (75087).

225249 is an equidigital number, since it uses as much as digits as its factorization.

225249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75086.

The product of its digits is 1440, while the sum is 24.

The square root of 225249 is about 474.6040454948. The cubic root of 225249 is about 60.8444482516.

It can be divided in two parts, 225 and 249, that added together give a palindrome (474).

The spelling of 225249 in words is "two hundred twenty-five thousand, two hundred forty-nine".