225687284 has 6 divisors (see below), whose sum is σ = 394952754. Its totient is φ = 112843640.

The previous prime is 225687233. The next prime is 225687313. The reversal of 225687284 is 482786522.

It can be written as a sum of positive squares in only one way, i.e., 163277284 + 62410000 = 12778^2 + 7900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28210907 + ... + 28210914.

It is an arithmetic number, because the mean of its divisors is an integer number (65825459).

Almost surely, 2^225687284 is an apocalyptic number.

It is an amenable number.

225687284 is a deficient number, since it is larger than the sum of its proper divisors (169265470).

225687284 is a wasteful number, since it uses less digits than its factorization.

225687284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56421825 (or 56421823 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 225687284 is about 15022.8919985468. The cubic root of 225687284 is about 608.8388589723.

The spelling of 225687284 in words is "two hundred twenty-five million, six hundred eighty-seven thousand, two hundred eighty-four".