255250030505 has 4 divisors (see below), whose sum is σ = 306300036612. Its totient is φ = 204200024400.

The previous prime is 255250030463. The next prime is 255250030507. The reversal of 255250030505 is 505030052552.

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 144142474921 + 111107555584 = 379661^2 + 333328^2 .

It is not a de Polignac number, because 255250030505 - 2²⁸ = 254981595049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255250030507) by changing a digit.

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, 25525003046 + ... + 25525003055.

It is an arithmetic number, because the mean of its divisors is an integer number (76575009153).

Almost surely, 2^255250030505 is an apocalyptic number.

It is an amenable number.

255250030505 is a deficient number, since it is larger than the sum of its proper divisors (51050006107).

255250030505 is an equidigital number, since it uses as much as digits as its factorization.

255250030505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51050006106.

The product of its (nonzero) digits is 37500, while the sum is 32.

The spelling of 255250030505 in words is "two hundred fifty-five billion, two hundred fifty million, thirty thousand, five hundred five".