225212221850 has 48 divisors (see below), whose sum is σ = 522258376896. Its totient is φ = 70196016000.

The previous prime is 225212221799. The next prime is 225212221921. The reversal of 225212221850 is 58122212522.

It is a super-2 number, since 2×225212221850² (a number of 24 digits) contains 22 as substring.

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, 29244491 + ... + 29252190.

It is an arithmetic number, because the mean of its divisors is an integer number (10880382852).

Almost surely, 2^225212221850 is an apocalyptic number.

225212221850 is an abundant number, since it is smaller than the sum of its proper divisors (297046155046).

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

225212221850 is a wasteful number, since it uses less digits than its factorization.

225212221850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58496711 (or 58496706 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 225212221850 in words is "two hundred twenty-five billion, two hundred twelve million, two hundred twenty-one thousand, eight hundred fifty".