255001222 has 16 divisors (see below), whose sum is σ = 447808032. Its totient is φ = 106620480.

The previous prime is 255001183. The next prime is 255001237. The reversal of 255001222 is 222100552.

It is a self number, because there is not a number n which added to its sum of digits gives 255001222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221553 + ... + 222700.

It is an arithmetic number, because the mean of its divisors is an integer number (27988002).

Almost surely, 2^255001222 is an apocalyptic number.

255001222 is a deficient number, since it is larger than the sum of its proper divisors (192806810).

255001222 is a wasteful number, since it uses less digits than its factorization.

255001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444303.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 255001222 is about 15968.7576849297. The cubic root of 255001222 is about 634.1335834911.

Adding to 255001222 its reverse (222100552), we get a palindrome (477101774).

The spelling of 255001222 in words is "two hundred fifty-five million, one thousand, two hundred twenty-two".