225512663 has 4 divisors (see below), whose sum is σ = 225555840. Its totient is φ = 225469488.

The previous prime is 225512659. The next prime is 225512711. The reversal of 225512663 is 366215522.

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

It is a cyclic number.

It is not a de Polignac number, because 225512663 - 2² = 225512659 is a prime.

It is a super-2 number, since 2×225512663² = 101711922346703138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225562663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12470 + ... + 24627.

It is an arithmetic number, because the mean of its divisors is an integer number (56388960).

Almost surely, 2^225512663 is an apocalyptic number.

225512663 is a deficient number, since it is larger than the sum of its proper divisors (43177).

225512663 is an equidigital number, since it uses as much as digits as its factorization.

225512663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43176.

The product of its digits is 21600, while the sum is 32.

The square root of 225512663 is about 15017.0790435424. The cubic root of 225512663 is about 608.6817928463.

The spelling of 225512663 in words is "two hundred twenty-five million, five hundred twelve thousand, six hundred sixty-three".