225811763 has 4 divisors (see below), whose sum is σ = 226364280. Its totient is φ = 225259248.

The previous prime is 225811759. The next prime is 225811793. The reversal of 225811763 is 367118522.

It is a happy number.

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 225811763 - 2² = 225811759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225811793) by changing a digit.

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, 275645 + ... + 276462.

It is an arithmetic number, because the mean of its divisors is an integer number (56591070).

Almost surely, 2^225811763 is an apocalyptic number.

225811763 is a deficient number, since it is larger than the sum of its proper divisors (552517).

225811763 is an equidigital number, since it uses as much as digits as its factorization.

225811763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552516.

The product of its digits is 20160, while the sum is 35.

The square root of 225811763 is about 15027.0344046988. The cubic root of 225811763 is about 608.9507744829.

The spelling of 225811763 in words is "two hundred twenty-five million, eight hundred eleven thousand, seven hundred sixty-three".