225235918 has 16 divisors (see below), whose sum is σ = 371099520. Its totient is φ = 102051576.

The previous prime is 225235903. The next prime is 225235921. The reversal of 225235918 is 819532522.

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 in 7 ways as a sum of consecutive naturals, for example, 127980 + ... + 129727.

It is an arithmetic number, because the mean of its divisors is an integer number (23193720).

Almost surely, 2^225235918 is an apocalyptic number.

225235918 is a deficient number, since it is larger than the sum of its proper divisors (145863602).

225235918 is a wasteful number, since it uses less digits than its factorization.

225235918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257751.

The product of its digits is 43200, while the sum is 37.

The square root of 225235918 is about 15007.8618730317. The cubic root of 225235918 is about 608.4327032185.

It can be divided in two parts, 22523 and 5918, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 225235918 in words is "two hundred twenty-five million, two hundred thirty-five thousand, nine hundred eighteen".