221534125250 has 32 divisors (see below), whose sum is σ = 418738260096. Its totient is φ = 87753313200.

The previous prime is 221534125213. The next prime is 221534125289. The reversal of 221534125250 is 52521435122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4275884 + ... + 4327383.

It is an arithmetic number, because the mean of its divisors is an integer number (13085570628).

Almost surely, 2^221534125250 is an apocalyptic number.

221534125250 is a deficient number, since it is larger than the sum of its proper divisors (197204134846).

221534125250 is a wasteful number, since it uses less digits than its factorization.

221534125250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603387 (or 8603377 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 221534125250 in words is "two hundred twenty-one billion, five hundred thirty-four million, one hundred twenty-five thousand, two hundred fifty".