225207189 has 32 divisors (see below), whose sum is σ = 342672000. Its totient is φ = 146126592.

The previous prime is 225207187. The next prime is 225207217. The reversal of 225207189 is 981702522.

It is not a de Polignac number, because 225207189 - 2¹ = 225207187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225207187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172989 + ... + 174285.

It is an arithmetic number, because the mean of its divisors is an integer number (10708500).

Almost surely, 2^225207189 is an apocalyptic number.

It is an amenable number.

225207189 is a deficient number, since it is larger than the sum of its proper divisors (117464811).

225207189 is a wasteful number, since it uses less digits than its factorization.

225207189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 225207189 is about 15006.9047108323. The cubic root of 225207189 is about 608.4068334453.

The spelling of 225207189 in words is "two hundred twenty-five million, two hundred seven thousand, one hundred eighty-nine".