255526155545 has 4 divisors (see below), whose sum is σ = 306631386660. Its totient is φ = 204420924432.

The previous prime is 255526155517. The next prime is 255526155557. The reversal of 255526155545 is 545551625552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135359239744 + 120166915801 = 367912^2 + 346651^2 .

It is a cyclic number.

It is not a de Polignac number, because 255526155545 - 2²⁴ = 255509378329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255526155493 and 255526155502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25552615550 + ... + 25552615559.

It is an arithmetic number, because the mean of its divisors is an integer number (76657846665).

Almost surely, 2^255526155545 is an apocalyptic number.

It is an amenable number.

255526155545 is a deficient number, since it is larger than the sum of its proper divisors (51105231115).

255526155545 is an equidigital number, since it uses as much as digits as its factorization.

255526155545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51105231114.

The product of its digits is 7500000, while the sum is 50.

The spelling of 255526155545 in words is "two hundred fifty-five billion, five hundred twenty-six million, one hundred fifty-five thousand, five hundred forty-five".