225064187 has 2 divisors, whose sum is σ = 225064188. Its totient is φ = 225064186.

The previous prime is 225064171. The next prime is 225064199. The reversal of 225064187 is 781460522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225064187 - 2⁴ = 225064171 is a prime.

It is not a weakly prime, because it can be changed into another prime (225064117) 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, 112532093 + 112532094.

It is an arithmetic number, because the mean of its divisors is an integer number (112532094).

Almost surely, 2^225064187 is an apocalyptic number.

225064187 is a deficient number, since it is larger than the sum of its proper divisors (1).

225064187 is an equidigital number, since it uses as much as digits as its factorization.

225064187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 225064187 is about 15002.1394140969. The cubic root of 225064187 is about 608.2780308435.

The spelling of 225064187 in words is "two hundred twenty-five million, sixty-four thousand, one hundred eighty-seven".