255626621605 has 8 divisors (see below), whose sum is σ = 307061489664. Its totient is φ = 204294934800.

The previous prime is 255626621599. The next prime is 255626621617. The reversal of 255626621605 is 506126626552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255626621605 - 2¹¹ = 255626619557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25789861 + ... + 25799770.

It is an arithmetic number, because the mean of its divisors is an integer number (38382686208).

Almost surely, 2^255626621605 is an apocalyptic number.

It is an amenable number.

255626621605 is a deficient number, since it is larger than the sum of its proper divisors (51434868059).

255626621605 is an equidigital number, since it uses as much as digits as its factorization.

255626621605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51590627.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 255626621605 in words is "two hundred fifty-five billion, six hundred twenty-six million, six hundred twenty-one thousand, six hundred five".