225658 has 8 divisors (see below), whose sum is σ = 358452. Its totient is φ = 106176.

The previous prime is 225637. The next prime is 225671. The reversal of 225658 is 856522.

It can be written as a sum of positive squares in 2 ways, for example, as 218089 + 7569 = 467^2 + 87^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285 + ... + 3352.

2²²⁵⁶⁵⁸ is an apocalyptic number.

225658 is a deficient number, since it is larger than the sum of its proper divisors (132794).

225658 is a wasteful number, since it uses less digits than its factorization.

225658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656.

The product of its digits is 4800, while the sum is 28.

The square root of 225658 is about 475.0347355720. The cubic root of 225658 is about 60.8812524586.

The spelling of 225658 in words is "two hundred twenty-five thousand, six hundred fifty-eight".