225144121451 has 4 divisors (see below), whose sum is σ = 225171476232. Its totient is φ = 225116766672.

The previous prime is 225144121427. The next prime is 225144121523. The reversal of 225144121451 is 154121441522.

225144121451 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 not a de Polignac number, because 225144121451 - 2¹⁰ = 225144120427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225144121051) 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, 13665041 + ... + 13681506.

It is an arithmetic number, because the mean of its divisors is an integer number (56292869058).

Almost surely, 2^225144121451 is an apocalyptic number.

225144121451 is a deficient number, since it is larger than the sum of its proper divisors (27354781).

225144121451 is an equidigital number, since it uses as much as digits as its factorization.

225144121451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27354780.

The product of its digits is 12800, while the sum is 32.

Adding to 225144121451 its reverse (154121441522), we get a palindrome (379265562973).

The spelling of 225144121451 in words is "two hundred twenty-five billion, one hundred forty-four million, one hundred twenty-one thousand, four hundred fifty-one".