225841317891 has 8 divisors (see below), whose sum is σ = 344139151104. Its totient is φ = 129052181640.

The previous prime is 225841317857. The next prime is 225841317899. The reversal of 225841317891 is 198713148522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225841317891 - 2⁶ = 225841317827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225841317899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5377174215 + ... + 5377174256.

It is an arithmetic number, because the mean of its divisors is an integer number (43017393888).

Almost surely, 2^225841317891 is an apocalyptic number.

225841317891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

225841317891 is a deficient number, since it is larger than the sum of its proper divisors (118297833213).

225841317891 is a wasteful number, since it uses less digits than its factorization.

225841317891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10754348481.

The product of its digits is 967680, while the sum is 51.

The spelling of 225841317891 in words is "two hundred twenty-five billion, eight hundred forty-one million, three hundred seventeen thousand, eight hundred ninety-one".