225656042 has 4 divisors (see below), whose sum is σ = 338484066. Its totient is φ = 112828020.

The previous prime is 225655987. The next prime is 225656063. The reversal of 225656042 is 240656522.

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

It can be written as a sum of positive squares in only one way, i.e., 224070961 + 1585081 = 14969^2 + 1259^2 .

It is a super-2 number, since 2×225656042² = 101841298582211528, which contains 22 as substring.

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, 56414009 + ... + 56414012.

Almost surely, 2^225656042 is an apocalyptic number.

225656042 is a deficient number, since it is larger than the sum of its proper divisors (112828024).

225656042 is a wasteful number, since it uses less digits than its factorization.

225656042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112828023.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 225656042 is about 15021.8521494521. The cubic root of 225656042 is about 608.8107637232.

The spelling of 225656042 in words is "two hundred twenty-five million, six hundred fifty-six thousand, forty-two".