255305208740 has 12 divisors (see below), whose sum is σ = 536140938396. Its totient is φ = 102122083488.

The previous prime is 255305208733. The next prime is 255305208757. The reversal of 255305208740 is 47802503552.

It can be written as a sum of positive squares in 2 ways, for example, as 120558950656 + 134746258084 = 347216^2 + 367078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6382630199 + ... + 6382630238.

It is an arithmetic number, because the mean of its divisors is an integer number (44678411533).

Almost surely, 2^255305208740 is an apocalyptic number.

255305208740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255305208740 is an abundant number, since it is smaller than the sum of its proper divisors (280835729656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255305208740 is a wasteful number, since it uses less digits than its factorization.

255305208740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12765260446 (or 12765260444 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 255305208740 in words is "two hundred fifty-five billion, three hundred five million, two hundred eight thousand, seven hundred forty".