225488869 has 2 divisors, whose sum is σ = 225488870. Its totient is φ = 225488868.

The previous prime is 225488797. The next prime is 225488899. The reversal of 225488869 is 968884522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211702500 + 13786369 = 14550^2 + 3713^2 .

It is a cyclic number.

It is not a de Polignac number, because 225488869 - 2¹³ = 225480677 is a prime.

It is a super-2 number, since 2×225488869² = 101690460085798322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225488899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112744434 + 112744435.

It is an arithmetic number, because the mean of its divisors is an integer number (112744435).

Almost surely, 2^225488869 is an apocalyptic number.

It is an amenable number.

225488869 is a deficient number, since it is larger than the sum of its proper divisors (1).

225488869 is an equidigital number, since it uses as much as digits as its factorization.

225488869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2211840, while the sum is 52.

The square root of 225488869 is about 15016.2867913476. The cubic root of 225488869 is about 608.6603846117.

The spelling of 225488869 in words is "two hundred twenty-five million, four hundred eighty-eight thousand, eight hundred sixty-nine".