225242077 has 2 divisors, whose sum is σ = 225242078. Its totient is φ = 225242076.

The previous prime is 225242071. The next prime is 225242081. The reversal of 225242077 is 770242522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207043321 + 18198756 = 14389^2 + 4266^2 .

It is a cyclic number.

It is not a de Polignac number, because 225242077 - 2⁷ = 225241949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225242071) 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, 112621038 + 112621039.

It is an arithmetic number, because the mean of its divisors is an integer number (112621039).

Almost surely, 2^225242077 is an apocalyptic number.

It is an amenable number.

225242077 is a deficient number, since it is larger than the sum of its proper divisors (1).

225242077 is an equidigital number, since it uses as much as digits as its factorization.

225242077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 225242077 is about 15008.0670640826. The cubic root of 225242077 is about 608.4382489634.

Adding to 225242077 its reverse (770242522), we get a palindrome (995484599).

The spelling of 225242077 in words is "two hundred twenty-five million, two hundred forty-two thousand, seventy-seven".