225518550 has 48 divisors (see below), whose sum is σ = 564553152. Its totient is φ = 59572000.

The previous prime is 225518537. The next prime is 225518567. The reversal of 225518550 is 55815522.

225518550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9025 + ... + 23075.

It is an arithmetic number, because the mean of its divisors is an integer number (11761524).

Almost surely, 2^225518550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225518550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282276576).

225518550 is an abundant number, since it is smaller than the sum of its proper divisors (339034602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225518550 is a wasteful number, since it uses less digits than its factorization.

225518550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14173 (or 14168 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 225518550 is about 15017.2750524188. The cubic root of 225518550 is about 608.6870893390.

The spelling of 225518550 in words is "two hundred twenty-five million, five hundred eighteen thousand, five hundred fifty".