225312356155 has 4 divisors (see below), whose sum is σ = 270374827392. Its totient is φ = 180249884920.

The previous prime is 225312356117. The next prime is 225312356167. The reversal of 225312356155 is 551653213522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551653213522 = 2 ⋅275826606761.

It is not a de Polignac number, because 225312356155 - 2²³ = 225303967547 is a prime.

It is a super-2 number, since 2×225312356155² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 22531235611 + ... + 22531235620.

It is an arithmetic number, because the mean of its divisors is an integer number (67593706848).

Almost surely, 2^225312356155 is an apocalyptic number.

225312356155 is a deficient number, since it is larger than the sum of its proper divisors (45062471237).

225312356155 is an equidigital number, since it uses as much as digits as its factorization.

225312356155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45062471236.

The product of its digits is 270000, while the sum is 40.

Adding to 225312356155 its reverse (551653213522), we get a palindrome (776965569677).

The spelling of 225312356155 in words is "two hundred twenty-five billion, three hundred twelve million, three hundred fifty-six thousand, one hundred fifty-five".