255052422521 has 16 divisors (see below), whose sum is σ = 275178578640. Its totient is φ = 234999048960.

The previous prime is 255052422491. The next prime is 255052422533. The reversal of 255052422521 is 125224250552.

It can be written as a sum of positive squares in 8 ways, for example, as 41271954025 + 213780468496 = 203155^2 + 462364^2 .

It is not a de Polignac number, because 255052422521 - 2¹⁴ = 255052406137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255052422571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18500651 + ... + 18514431.

It is an arithmetic number, because the mean of its divisors is an integer number (17198661165).

Almost surely, 2^255052422521 is an apocalyptic number.

It is an amenable number.

255052422521 is a deficient number, since it is larger than the sum of its proper divisors (20126156119).

255052422521 is a wasteful number, since it uses less digits than its factorization.

255052422521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16316.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 255052422521 in words is "two hundred fifty-five billion, fifty-two million, four hundred twenty-two thousand, five hundred twenty-one".