225168311 has 4 divisors (see below), whose sum is σ = 225199800. Its totient is φ = 225136824.

The previous prime is 225168299. The next prime is 225168319. The reversal of 225168311 is 113861522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225168311 is a prime.

It is a super-3 number, since 3×225168311³ (a number of 26 digits) contains 333 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 (225168319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725 + ... + 21233.

It is an arithmetic number, because the mean of its divisors is an integer number (56299950).

Almost surely, 2^225168311 is an apocalyptic number.

225168311 is a deficient number, since it is larger than the sum of its proper divisors (31489).

225168311 is a wasteful number, since it uses less digits than its factorization.

225168311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31488.

The product of its digits is 2880, while the sum is 29.

The square root of 225168311 is about 15005.6093178518. The cubic root of 225168311 is about 608.3718212383.

The spelling of 225168311 in words is "two hundred twenty-five million, one hundred sixty-eight thousand, three hundred eleven".