255003043221 has 12 divisors (see below), whose sum is σ = 390004654572. Its totient is φ = 160001909376.

The previous prime is 255003043157. The next prime is 255003043231. The reversal of 255003043221 is 122340300552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 227065592196 + 27937451025 = 476514^2 + 167145^2 .

It is not a de Polignac number, because 255003043221 - 2⁶ = 255003043157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255003043231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 833343126 + ... + 833343431.

It is an arithmetic number, because the mean of its divisors is an integer number (32500387881).

Almost surely, 2^255003043221 is an apocalyptic number.

It is an amenable number.

255003043221 is a deficient number, since it is larger than the sum of its proper divisors (135001611351).

255003043221 is a wasteful number, since it uses less digits than its factorization.

255003043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666686580 (or 1666686577 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 255003043221 its reverse (122340300552), we get a palindrome (377343343773).

The spelling of 255003043221 in words is "two hundred fifty-five billion, three million, forty-three thousand, two hundred twenty-one".