13250420305 has 32 divisors (see below), whose sum is σ = 17002483200. Its totient is φ = 9896006400.

The previous prime is 13250420257. The next prime is 13250420321. The reversal of 13250420305 is 50302405231.

13250420305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13250420305 - 2¹³ = 13250412113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13250420305.

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 31 ways as a sum of consecutive naturals, for example, 509160 + ... + 534550.

It is an arithmetic number, because the mean of its divisors is an integer number (531327600).

Almost surely, 2^13250420305 is an apocalyptic number.

It is an amenable number.

13250420305 is a deficient number, since it is larger than the sum of its proper divisors (3752062895).

13250420305 is a wasteful number, since it uses less digits than its factorization.

13250420305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25545.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 13250420305 its reverse (50302405231), we get a palindrome (63552825536).

The spelling of 13250420305 in words is "thirteen billion, two hundred fifty million, four hundred twenty thousand, three hundred five".