225541577 has 2 divisors, whose sum is σ = 225541578. Its totient is φ = 225541576.

The previous prime is 225541549. The next prime is 225541607. The reversal of 225541577 is 775145522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211673401 + 13868176 = 14549^2 + 3724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225541577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225541577.

It is not a weakly prime, because it can be changed into another prime (225541507) 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, 112770788 + 112770789.

It is an arithmetic number, because the mean of its divisors is an integer number (112770789).

Almost surely, 2^225541577 is an apocalyptic number.

It is an amenable number.

225541577 is a deficient number, since it is larger than the sum of its proper divisors (1).

225541577 is an equidigital number, since it uses as much as digits as its factorization.

225541577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98000, while the sum is 38.

The square root of 225541577 is about 15018.0417165488. The cubic root of 225541577 is about 608.7078056845.

The spelling of 225541577 in words is "two hundred twenty-five million, five hundred forty-one thousand, five hundred seventy-seven".