225388897 has 2 divisors, whose sum is σ = 225388898. Its totient is φ = 225388896.

The previous prime is 225388859. The next prime is 225388921. The reversal of 225388897 is 798883522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204604416 + 20784481 = 14304^2 + 4559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225388897 is a prime.

It is not a weakly prime, because it can be changed into another prime (225388837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112694448 + 112694449.

It is an arithmetic number, because the mean of its divisors is an integer number (112694449).

Almost surely, 2^225388897 is an apocalyptic number.

It is an amenable number.

225388897 is a deficient number, since it is larger than the sum of its proper divisors (1).

225388897 is an equidigital number, since it uses as much as digits as its factorization.

225388897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The square root of 225388897 is about 15012.9576366551. The cubic root of 225388897 is about 608.5704200959.

The spelling of 225388897 in words is "two hundred twenty-five million, three hundred eighty-eight thousand, eight hundred ninety-seven".