225212077 has 2 divisors, whose sum is σ = 225212078. Its totient is φ = 225212076.

The previous prime is 225212059. The next prime is 225212083. The reversal of 225212077 is 770212522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225180036 + 32041 = 15006^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 225212077 - 2⁷ = 225211949 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 (225212017) 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, 112606038 + 112606039.

It is an arithmetic number, because the mean of its divisors is an integer number (112606039).

Almost surely, 2^225212077 is an apocalyptic number.

It is an amenable number.

225212077 is a deficient number, since it is larger than the sum of its proper divisors (1).

225212077 is an equidigital number, since it uses as much as digits as its factorization.

225212077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 225212077 is about 15007.0675683159. The cubic root of 225212077 is about 608.4112351270.

Adding to 225212077 its reverse (770212522), we get a palindrome (995424599).

The spelling of 225212077 in words is "two hundred twenty-five million, two hundred twelve thousand, seventy-seven".