255544421205 has 16 divisors (see below), whose sum is σ = 411319407744. Its totient is φ = 135474246720.

The previous prime is 255544421189. The next prime is 255544421221. The reversal of 255544421205 is 502124445552.

It is an interprime number because it is at equal distance from previous prime (255544421189) and next prime (255544421221).

It is not a de Polignac number, because 255544421205 - 2⁴ = 255544421189 is a prime.

It is a congruent number.

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, 51004366 + ... + 51009375.

It is an arithmetic number, because the mean of its divisors is an integer number (25707462984).

Almost surely, 2^255544421205 is an apocalyptic number.

It is an amenable number.

255544421205 is a deficient number, since it is larger than the sum of its proper divisors (155774986539).

255544421205 is a wasteful number, since it uses less digits than its factorization.

255544421205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102013916.

The product of its (nonzero) digits is 320000, while the sum is 39.

Adding to 255544421205 its reverse (502124445552), we get a palindrome (757668866757).

The spelling of 255544421205 in words is "two hundred fifty-five billion, five hundred forty-four million, four hundred twenty-one thousand, two hundred five".