225555889 has 8 divisors (see below), whose sum is σ = 245266112. Its totient is φ = 206182800.

The previous prime is 225555887. The next prime is 225555919. The reversal of 225555889 is 988555522.

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 225555889 - 2¹ = 225555887 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (225555887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82887 + ... + 85564.

It is an arithmetic number, because the mean of its divisors is an integer number (30658264).

Almost surely, 2^225555889 is an apocalyptic number.

It is an amenable number.

225555889 is a deficient number, since it is larger than the sum of its proper divisors (19710223).

225555889 is a wasteful number, since it uses less digits than its factorization.

225555889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168567.

The product of its digits is 1440000, while the sum is 49.

The square root of 225555889 is about 15018.5182025392. The cubic root of 225555889 is about 608.7206808300.

The spelling of 225555889 in words is "two hundred twenty-five million, five hundred fifty-five thousand, eight hundred eighty-nine".