225461549 has 2 divisors, whose sum is σ = 225461550. Its totient is φ = 225461548.

The previous prime is 225461539. The next prime is 225461563. The reversal of 225461549 is 945164522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224850025 + 611524 = 14995^2 + 782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225461549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225461539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112730774 + 112730775.

It is an arithmetic number, because the mean of its divisors is an integer number (112730775).

Almost surely, 2^225461549 is an apocalyptic number.

It is an amenable number.

225461549 is a deficient number, since it is larger than the sum of its proper divisors (1).

225461549 is an equidigital number, since it uses as much as digits as its factorization.

225461549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 38.

The square root of 225461549 is about 15015.3770848421. The cubic root of 225461549 is about 608.6358020630.

The spelling of 225461549 in words is "two hundred twenty-five million, four hundred sixty-one thousand, five hundred forty-nine".