13505255050205 has 4 divisors (see below), whose sum is σ = 16206306060252. Its totient is φ = 10804204040160.

The previous prime is 13505255050187. The next prime is 13505255050223. The reversal of 13505255050205 is 50205055250531.

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

It is an interprime number because it is at equal distance from previous prime (13505255050187) and next prime (13505255050223).

It can be written as a sum of positive squares in 2 ways, for example, as 8115330982564 + 5389924067641 = 2848742^2 + 2321621^2 .

It is not a de Polignac number, because 13505255050205 - 2⁶ = 13505255050141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350525505016 + ... + 1350525505025.

It is an arithmetic number, because the mean of its divisors is an integer number (4051576515063).

Almost surely, 2^{13505255050205} is an apocalyptic number.

It is an amenable number.

13505255050205 is a deficient number, since it is larger than the sum of its proper divisors (2701051010047).

13505255050205 is an equidigital number, since it uses as much as digits as its factorization.

13505255050205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701051010046.

The product of its (nonzero) digits is 187500, while the sum is 38.

The spelling of 13505255050205 in words is "thirteen trillion, five hundred five billion, two hundred fifty-five million, fifty thousand, two hundred five".