225738566 has 4 divisors (see below), whose sum is σ = 338607852. Its totient is φ = 112869282.

The previous prime is 225738547. The next prime is 225738571. The reversal of 225738566 is 665837522.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56434640 + ... + 56434643.

It is an arithmetic number, because the mean of its divisors is an integer number (84651963).

Almost surely, 2^225738566 is an apocalyptic number.

225738566 is a deficient number, since it is larger than the sum of its proper divisors (112869286).

225738566 is a wasteful number, since it uses less digits than its factorization.

225738566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112869285.

The product of its digits is 604800, while the sum is 44.

The square root of 225738566 is about 15024.5986968039. The cubic root of 225738566 is about 608.8849701359.

The spelling of 225738566 in words is "two hundred twenty-five million, seven hundred thirty-eight thousand, five hundred sixty-six".