225230381 has 2 divisors, whose sum is σ = 225230382. Its totient is φ = 225230380.

The previous prime is 225230371. The next prime is 225230387. The reversal of 225230381 is 183032522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144841225 + 80389156 = 12035^2 + 8966^2 .

It is a cyclic number.

It is not a de Polignac number, because 225230381 - 2²² = 221036077 is a prime.

It is a super-2 number, since 2×225230381² = 101457449050810322, 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 225230381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225230387) 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, 112615190 + 112615191.

It is an arithmetic number, because the mean of its divisors is an integer number (112615191).

Almost surely, 2^225230381 is an apocalyptic number.

It is an amenable number.

225230381 is a deficient number, since it is larger than the sum of its proper divisors (1).

225230381 is an equidigital number, since it uses as much as digits as its factorization.

225230381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 225230381 is about 15007.6774019167. The cubic root of 225230381 is about 608.4277174544.

The spelling of 225230381 in words is "two hundred twenty-five million, two hundred thirty thousand, three hundred eighty-one".