255259939953 has 4 divisors (see below), whose sum is σ = 340346586608. Its totient is φ = 170173293300.

The previous prime is 255259939933. The next prime is 255259939969. The reversal of 255259939953 is 359939952552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 255259939953 - 2⁶ = 255259939889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255259939933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42543323323 + ... + 42543323328.

It is an arithmetic number, because the mean of its divisors is an integer number (85086646652).

Almost surely, 2^255259939953 is an apocalyptic number.

It is an amenable number.

255259939953 is a deficient number, since it is larger than the sum of its proper divisors (85086646655).

255259939953 is an equidigital number, since it uses as much as digits as its factorization.

255259939953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85086646654.

The product of its digits is 147622500, while the sum is 66.

The spelling of 255259939953 in words is "two hundred fifty-five billion, two hundred fifty-nine million, nine hundred thirty-nine thousand, nine hundred fifty-three".