225345155121 has 12 divisors (see below), whose sum is σ = 325549523572. Its totient is φ = 150206580576.

The previous prime is 225345155107. The next prime is 225345155141. The reversal of 225345155121 is 121551543522.

225345155121 is a `hidden beast` number, since 2 + 2 + 5 + 34 + 51 + 551 + 21 = 666.

225345155121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1805315121 + 223539840000 = 42489^2 + 472800^2 .

It is not a de Polignac number, because 225345155121 - 2¹⁴ = 225345138737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225345155141) 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 11 ways as a sum of consecutive naturals, for example, 1899466 + ... + 2014611.

Almost surely, 2^225345155121 is an apocalyptic number.

It is an amenable number.

225345155121 is a deficient number, since it is larger than the sum of its proper divisors (100204368451).

225345155121 is a wasteful number, since it uses less digits than its factorization.

225345155121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920480 (or 3920477 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

Adding to 225345155121 its reverse (121551543522), we get a palindrome (346896698643).

The spelling of 225345155121 in words is "two hundred twenty-five billion, three hundred forty-five million, one hundred fifty-five thousand, one hundred twenty-one".