225389387 has 2 divisors, whose sum is σ = 225389388. Its totient is φ = 225389386.

The previous prime is 225389347. The next prime is 225389389. The reversal of 225389387 is 783983522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225389387 - 2¹⁶ = 225323851 is a prime.

Together with 225389389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225389389) 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, 112694693 + 112694694.

It is an arithmetic number, because the mean of its divisors is an integer number (112694694).

Almost surely, 2^225389387 is an apocalyptic number.

225389387 is a deficient number, since it is larger than the sum of its proper divisors (1).

225389387 is an equidigital number, since it uses as much as digits as its factorization.

225389387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 225389387 is about 15012.9739558823. The cubic root of 225389387 is about 608.5708611103.

The spelling of 225389387 in words is "two hundred twenty-five million, three hundred eighty-nine thousand, three hundred eighty-seven".