225575723891 has 4 divisors (see below), whose sum is σ = 257800827312. Its totient is φ = 193350620472.

The previous prime is 225575723869. The next prime is 225575723897. The reversal of 225575723891 is 198327575522.

225575723891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225575723891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225575723897) 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, 16112551700 + ... + 16112551713.

It is an arithmetic number, because the mean of its divisors is an integer number (64450206828).

Almost surely, 2^225575723891 is an apocalyptic number.

225575723891 is a deficient number, since it is larger than the sum of its proper divisors (32225103421).

225575723891 is an equidigital number, since it uses as much as digits as its factorization.

225575723891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32225103420.

The product of its digits is 10584000, while the sum is 56.

The spelling of 225575723891 in words is "two hundred twenty-five billion, five hundred seventy-five million, seven hundred twenty-three thousand, eight hundred ninety-one".