225480731181 has 4 divisors (see below), whose sum is σ = 300640974912. Its totient is φ = 150320487452.

The previous prime is 225480731159. The next prime is 225480731227. The reversal of 225480731181 is 181137084522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225480731181 - 2²⁷ = 225346513453 is a prime.

It is a super-2 number, since 2×225480731181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225480731111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37580121861 + ... + 37580121866.

It is an arithmetic number, because the mean of its divisors is an integer number (75160243728).

Almost surely, 2^225480731181 is an apocalyptic number.

It is an amenable number.

225480731181 is a deficient number, since it is larger than the sum of its proper divisors (75160243731).

225480731181 is an equidigital number, since it uses as much as digits as its factorization.

225480731181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75160243730.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 225480731181 in words is "two hundred twenty-five billion, four hundred eighty million, seven hundred thirty-one thousand, one hundred eighty-one".