225485187 has 16 divisors (see below), whose sum is σ = 304915968. Its totient is φ = 148196960.

The previous prime is 225485173. The next prime is 225485209. The reversal of 225485187 is 781584522.

It is a cyclic number.

It is not a de Polignac number, because 225485187 - 2¹⁸ = 225223043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225485147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203878 + ... + 204980.

It is an arithmetic number, because the mean of its divisors is an integer number (19057248).

Almost surely, 2^225485187 is an apocalyptic number.

225485187 is a deficient number, since it is larger than the sum of its proper divisors (79430781).

225485187 is a wasteful number, since it uses less digits than its factorization.

225485187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its digits is 179200, while the sum is 42.

The square root of 225485187 is about 15016.1641906314. The cubic root of 225485187 is about 608.6570716622.

The spelling of 225485187 in words is "two hundred twenty-five million, four hundred eighty-five thousand, one hundred eighty-seven".