21250225666226 has 8 divisors (see below), whose sum is σ = 31879485177600. Its totient is φ = 10623730607028.

The previous prime is 21250225666171. The next prime is 21250225666261. The reversal of 21250225666226 is 62266652205212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691093826 + ... + 691124573.

It is an arithmetic number, because the mean of its divisors is an integer number (3984935647200).

Almost surely, 2^{21250225666226} is an apocalyptic number.

21250225666226 is a deficient number, since it is larger than the sum of its proper divisors (10629259511374).

21250225666226 is a wasteful number, since it uses less digits than its factorization.

21250225666226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382226088.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 21250225666226 in words is "twenty-one trillion, two hundred fifty billion, two hundred twenty-five million, six hundred sixty-six thousand, two hundred twenty-six".