225153552181 has 2 divisors, whose sum is σ = 225153552182. Its totient is φ = 225153552180.

The previous prime is 225153552109. The next prime is 225153552187. The reversal of 225153552181 is 181255351522.

It is a happy number.

225153552181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186753622500 + 38399929681 = 432150^2 + 195959^2 .

It is a cyclic number.

It is not a de Polignac number, because 225153552181 - 2⁹ = 225153551669 is a prime.

It is a super-2 number, since 2×225153552181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225153552187) 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 as a sum of consecutive naturals, namely, 112576776090 + 112576776091.

It is an arithmetic number, because the mean of its divisors is an integer number (112576776091).

Almost surely, 2^225153552181 is an apocalyptic number.

It is an amenable number.

225153552181 is a deficient number, since it is larger than the sum of its proper divisors (1).

225153552181 is an equidigital number, since it uses as much as digits as its factorization.

225153552181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120000, while the sum is 40.

The spelling of 225153552181 in words is "two hundred twenty-five billion, one hundred fifty-three million, five hundred fifty-two thousand, one hundred eighty-one".