225188903 has 2 divisors, whose sum is σ = 225188904. Its totient is φ = 225188902.

The previous prime is 225188833. The next prime is 225188911. The reversal of 225188903 is 309881522.

225188903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225188903 - 2²⁰ = 224140327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225188923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112594451 + 112594452.

It is an arithmetic number, because the mean of its divisors is an integer number (112594452).

Almost surely, 2^225188903 is an apocalyptic number.

225188903 is a deficient number, since it is larger than the sum of its proper divisors (1).

225188903 is an equidigital number, since it uses as much as digits as its factorization.

225188903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 225188903 is about 15006.2954455788. The cubic root of 225188903 is about 608.3903661964.

The spelling of 225188903 in words is "two hundred twenty-five million, one hundred eighty-eight thousand, nine hundred three".