225299887 has 2 divisors, whose sum is σ = 225299888. Its totient is φ = 225299886.

The previous prime is 225299857. The next prime is 225299911. The reversal of 225299887 is 788992522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225299887 - 2¹⁹ = 224775599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225299857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112649943 + 112649944.

It is an arithmetic number, because the mean of its divisors is an integer number (112649944).

Almost surely, 2^225299887 is an apocalyptic number.

225299887 is a deficient number, since it is larger than the sum of its proper divisors (1).

225299887 is an equidigital number, since it uses as much as digits as its factorization.

225299887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 225299887 is about 15009.9929047285. The cubic root of 225299887 is about 608.4902978625.

The spelling of 225299887 in words is "two hundred twenty-five million, two hundred ninety-nine thousand, eight hundred eighty-seven".