225855807185 has 16 divisors (see below), whose sum is σ = 278994966096. Its totient is φ = 175395207168.

The previous prime is 225855807157. The next prime is 225855807209. The reversal of 225855807185 is 581708558522.

It can be written as a sum of positive squares in 8 ways, for example, as 27869965249 + 197985841936 = 166943^2 + 444956^2 .

It is a cyclic number.

It is not a de Polignac number, because 225855807185 - 2¹⁰ = 225855806161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225855807185.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329644 + ... + 1489853.

It is an arithmetic number, because the mean of its divisors is an integer number (17437185381).

Almost surely, 2^225855807185 is an apocalyptic number.

It is an amenable number.

225855807185 is a deficient number, since it is larger than the sum of its proper divisors (53139158911).

225855807185 is a wasteful number, since it uses less digits than its factorization.

225855807185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819972.

The product of its (nonzero) digits is 8960000, while the sum is 56.

The spelling of 225855807185 in words is "two hundred twenty-five billion, eight hundred fifty-five million, eight hundred seven thousand, one hundred eighty-five".