225523577 has 2 divisors, whose sum is σ = 225523578. Its totient is φ = 225523576.

The previous prime is 225523537. The next prime is 225523583. The reversal of 225523577 is 775325522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181818256 + 43705321 = 13484^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 225523577 - 2¹⁰ = 225522553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225523577.

It is not a weakly prime, because it can be changed into another prime (225523537) 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, 112761788 + 112761789.

It is an arithmetic number, because the mean of its divisors is an integer number (112761789).

Almost surely, 2^225523577 is an apocalyptic number.

It is an amenable number.

225523577 is a deficient number, since it is larger than the sum of its proper divisors (1).

225523577 is an equidigital number, since it uses as much as digits as its factorization.

225523577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147000, while the sum is 38.

The square root of 225523577 is about 15017.4424253932. The cubic root of 225523577 is about 608.6916120228.

It can be divided in two parts, 2255 and 23577, that multiplied together give a palindrome (53166135).

The spelling of 225523577 in words is "two hundred twenty-five million, five hundred twenty-three thousand, five hundred seventy-seven".