27755305255525 has 6 divisors (see below), whose sum is σ = 34416578516882. Its totient is φ = 22204244204400.

The previous prime is 27755305255487. The next prime is 27755305255547. The reversal of 27755305255525 is 52555250355772.

It can be written as a sum of positive squares in 3 ways, for example, as 5725884265924 + 22029420989601 = 2392882^2 + 4693551^2 .

It is not a de Polignac number, because 27755305255525 - 2³¹ = 27753157771877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27755305255525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555106105086 + ... + 555106105135.

Almost surely, 2^{27755305255525} is an apocalyptic number.

27755305255525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27755305255525 is a deficient number, since it is larger than the sum of its proper divisors (6661273261357).

27755305255525 is a wasteful number, since it uses less digits than its factorization.

27755305255525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110212210231 (or 1110212210226 counting only the distinct ones).

The product of its (nonzero) digits is 91875000, while the sum is 58.

The spelling of 27755305255525 in words is "twenty-seven trillion, seven hundred fifty-five billion, three hundred five million, two hundred fifty-five thousand, five hundred twenty-five".