225537211 has 2 divisors, whose sum is σ = 225537212. Its totient is φ = 225537210.

The previous prime is 225537197. The next prime is 225537217. The reversal of 225537211 is 112735522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225537211 - 2²⁷ = 91319483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225537211.

It is not a weakly prime, because it can be changed into another prime (225537217) 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, 112768605 + 112768606.

It is an arithmetic number, because the mean of its divisors is an integer number (112768606).

Almost surely, 2^225537211 is an apocalyptic number.

225537211 is a deficient number, since it is larger than the sum of its proper divisors (1).

225537211 is an equidigital number, since it uses as much as digits as its factorization.

225537211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 225537211 is about 15017.8963573465. The cubic root of 225537211 is about 608.7038779010.

The spelling of 225537211 in words is "two hundred twenty-five million, five hundred thirty-seven thousand, two hundred eleven".