284225 has 6 divisors (see below), whose sum is σ = 352470. Its totient is φ = 227360.

The previous prime is 284201. The next prime is 284227. The reversal of 284225 is 522482.

It can be written as a sum of positive squares in 3 ways, for example, as 23104 + 261121 = 152^2 + 511^2 .

It is not a de Polignac number, because 284225 - 2⁶ = 284161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284227) 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 5 ways as a sum of consecutive naturals, for example, 5660 + ... + 5709.

It is an arithmetic number, because the mean of its divisors is an integer number (58745).

2²⁸⁴²²⁵ is an apocalyptic number.

284225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

284225 is a deficient number, since it is larger than the sum of its proper divisors (68245).

284225 is a wasteful number, since it uses less digits than its factorization.

284225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11379 (or 11374 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 284225 is about 533.1275644721. The cubic root of 284225 is about 65.7487385726.

The spelling of 284225 in words is "two hundred eighty-four thousand, two hundred twenty-five".