255545253665 has 64 divisors (see below), whose sum is σ = 362228086080. Its totient is φ = 171328143360.

The previous prime is 255545253619. The next prime is 255545253683. The reversal of 255545253665 is 566352545552.

It can be written as a sum of positive squares in 32 ways, for example, as 253105585216 + 2439668449 = 503096^2 + 49393^2 .

It is not a de Polignac number, because 255545253665 - 2³² = 251250286369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4000457 + ... + 4063833.

It is an arithmetic number, because the mean of its divisors is an integer number (5659813845).

Almost surely, 2^255545253665 is an apocalyptic number.

It is an amenable number.

255545253665 is a deficient number, since it is larger than the sum of its proper divisors (106682832415).

255545253665 is a wasteful number, since it uses less digits than its factorization.

255545253665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63542.

The product of its digits is 27000000, while the sum is 53.

The spelling of 255545253665 in words is "two hundred fifty-five billion, five hundred forty-five million, two hundred fifty-three thousand, six hundred sixty-five".