225146 has 4 divisors (see below), whose sum is σ = 337722. Its totient is φ = 112572.

The previous prime is 225143. The next prime is 225149. The reversal of 225146 is 641522.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (225143) and next prime (225149).

It can be written as a sum of positive squares in only one way, i.e., 180625 + 44521 = 425^2 + 211^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225146.

It is not an unprimeable number, because it can be changed into a prime (225143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56285 + ... + 56288.

2²²⁵¹⁴⁶ is an apocalyptic number.

225146 is a deficient number, since it is larger than the sum of its proper divisors (112576).

225146 is a wasteful number, since it uses less digits than its factorization.

225146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112575.

The product of its digits is 480, while the sum is 20.

The square root of 225146 is about 474.4955215806. The cubic root of 225146 is about 60.8351726889.

Adding to 225146 its reverse (641522), we get a palindrome (866668).

The spelling of 225146 in words is "two hundred twenty-five thousand, one hundred forty-six".