225455187 has 8 divisors (see below), whose sum is σ = 307938960. Its totient is φ = 146637440.

The previous prime is 225455179. The next prime is 225455203. The reversal of 225455187 is 781554522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225455187 - 2³ = 225455179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225455137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916362 + ... + 916607.

It is an arithmetic number, because the mean of its divisors is an integer number (38492370).

Almost surely, 2^225455187 is an apocalyptic number.

225455187 is a deficient number, since it is larger than the sum of its proper divisors (82483773).

225455187 is a wasteful number, since it uses less digits than its factorization.

225455187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833013.

The product of its digits is 112000, while the sum is 39.

The square root of 225455187 is about 15015.1652338561. The cubic root of 225455187 is about 608.6300772474.

The spelling of 225455187 in words is "two hundred twenty-five million, four hundred fifty-five thousand, one hundred eighty-seven".