225345 has 16 divisors (see below), whose sum is σ = 366912. Its totient is φ = 118080.

The previous prime is 225343. The next prime is 225347. The reversal of 225345 is 543522.

It is an interprime number because it is at equal distance from previous prime (225343) and next prime (225347).

It is not a de Polignac number, because 225345 - 2¹ = 225343 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155 + ... + 1335.

It is an arithmetic number, because the mean of its divisors is an integer number (22932).

2²²⁵³⁴⁵ is an apocalyptic number.

It is an amenable number.

225345 is a deficient number, since it is larger than the sum of its proper divisors (141567).

225345 is a wasteful number, since it uses less digits than its factorization.

225345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its digits is 1200, while the sum is 21.

The square root of 225345 is about 474.7051716592. The cubic root of 225345 is about 60.8530908906.

Adding to 225345 its reverse (543522), we get a palindrome (768867).

The spelling of 225345 in words is "two hundred twenty-five thousand, three hundred forty-five".