225298081 has 2 divisors, whose sum is σ = 225298082. Its totient is φ = 225298080.

The previous prime is 225298063. The next prime is 225298091. The reversal of 225298081 is 180892522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207792225 + 17505856 = 14415^2 + 4184^2 .

It is a cyclic number.

It is not a de Polignac number, because 225298081 - 2¹¹ = 225296033 is a prime.

It is a super-2 number, since 2×225298081² = 101518450604565122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 225298081.

It is not a weakly prime, because it can be changed into another prime (225298091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112649040 + 112649041.

It is an arithmetic number, because the mean of its divisors is an integer number (112649041).

Almost surely, 2^225298081 is an apocalyptic number.

It is an amenable number.

225298081 is a deficient number, since it is larger than the sum of its proper divisors (1).

225298081 is an equidigital number, since it uses as much as digits as its factorization.

225298081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 225298081 is about 15009.9327446861. The cubic root of 225298081 is about 608.4886719756.

The spelling of 225298081 in words is "two hundred twenty-five million, two hundred ninety-eight thousand, eighty-one".