225524666 has 8 divisors (see below), whose sum is σ = 338953140. Its totient is φ = 112540288.

The previous prime is 225524639. The next prime is 225524671. The reversal of 225524666 is 666425522.

It can be written as a sum of positive squares in 2 ways, for example, as 192404641 + 33120025 = 13871^2 + 5755^2 .

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

It is a super-2 number, since 2×225524666² = 101722749948823112, 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 in 3 ways as a sum of consecutive naturals, for example, 109751 + ... + 111786.

Almost surely, 2^225524666 is an apocalyptic number.

225524666 is a deficient number, since it is larger than the sum of its proper divisors (113428474).

225524666 is a wasteful number, since it uses less digits than its factorization.

225524666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222048.

The product of its digits is 172800, while the sum is 38.

The square root of 225524666 is about 15017.4786831878. The cubic root of 225524666 is about 608.6925917638.

The spelling of 225524666 in words is "two hundred twenty-five million, five hundred twenty-four thousand, six hundred sixty-six".