253545335305 has 4 divisors (see below), whose sum is σ = 304254402372. Its totient is φ = 202836268240.

The previous prime is 253545335287. The next prime is 253545335339. The reversal of 253545335305 is 503533545352.

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 90208921104 + 163336414201 = 300348^2 + 404149^2 .

It is not a de Polignac number, because 253545335305 - 2¹⁹ = 253544811017 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 25354533526 + ... + 25354533535.

It is an arithmetic number, because the mean of its divisors is an integer number (76063600593).

Almost surely, 2^253545335305 is an apocalyptic number.

It is an amenable number.

253545335305 is a deficient number, since it is larger than the sum of its proper divisors (50709067067).

253545335305 is an equidigital number, since it uses as much as digits as its factorization.

253545335305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50709067066.

The product of its (nonzero) digits is 2025000, while the sum is 43.

The spelling of 253545335305 in words is "two hundred fifty-three billion, five hundred forty-five million, three hundred thirty-five thousand, three hundred five".