641255222 has 4 divisors (see below), whose sum is σ = 961882836. Its totient is φ = 320627610.

The previous prime is 641255213. The next prime is 641255227. The reversal of 641255222 is 222552146.

641255222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×641255222² = 822416519484538568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641255227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160313804 + ... + 160313807.

It is an arithmetic number, because the mean of its divisors is an integer number (240470709).

Almost surely, 2^641255222 is an apocalyptic number.

641255222 is a deficient number, since it is larger than the sum of its proper divisors (320627614).

641255222 is a wasteful number, since it uses less digits than its factorization.

641255222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320627613.

The product of its digits is 9600, while the sum is 29.

The square root of 641255222 is about 25323.0176321859. The cubic root of 641255222 is about 862.3369026339.

The spelling of 641255222 in words is "six hundred forty-one million, two hundred fifty-five thousand, two hundred twenty-two".