225131163 has 4 divisors (see below), whose sum is σ = 300174888. Its totient is φ = 150087440.

The previous prime is 225131161. The next prime is 225131201. The reversal of 225131163 is 361131522.

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 225131163 - 2¹ = 225131161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225131161) 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, 37521858 + ... + 37521863.

It is an arithmetic number, because the mean of its divisors is an integer number (75043722).

Almost surely, 2^225131163 is an apocalyptic number.

225131163 is a deficient number, since it is larger than the sum of its proper divisors (75043725).

225131163 is an equidigital number, since it uses as much as digits as its factorization.

225131163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75043724.

The product of its digits is 1080, while the sum is 24.

The square root of 225131163 is about 15004.3714630104. The cubic root of 225131163 is about 608.3383632452.

Adding to 225131163 its reverse (361131522), we get a palindrome (586262685).

The spelling of 225131163 in words is "two hundred twenty-five million, one hundred thirty-one thousand, one hundred sixty-three".