225218850 has 48 divisors (see below), whose sum is σ = 561130752. Its totient is φ = 59780160.

The previous prime is 225218827. The next prime is 225218881. The reversal of 225218850 is 58812522.

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, 30084 + ... + 36816.

It is an arithmetic number, because the mean of its divisors is an integer number (11690224).

Almost surely, 2^225218850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225218850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280565376).

225218850 is an abundant number, since it is smaller than the sum of its proper divisors (335911902).

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

225218850 is a wasteful number, since it uses less digits than its factorization.

225218850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971 (or 6966 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 225218850 is about 15007.2932269613. The cubic root of 225218850 is about 608.4173341604.

The spelling of 225218850 in words is "two hundred twenty-five million, two hundred eighteen thousand, eight hundred fifty".