1305421325345 has 8 divisors (see below), whose sum is σ = 1573346227560. Its totient is φ = 1039776635520.

The previous prime is 1305421325309. The next prime is 1305421325387. The reversal of 1305421325345 is 5435231245031.

It can be written as a sum of positive squares in 4 ways, for example, as 428209258129 + 877212067216 = 654377^2 + 936596^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1305421325345 - 2¹⁶ = 1305421259809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1305421325299 and 1305421325308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570051836 + ... + 570054125.

It is an arithmetic number, because the mean of its divisors is an integer number (196668278445).

Almost surely, 2^{1305421325345} is an apocalyptic number.

It is an amenable number.

1305421325345 is a deficient number, since it is larger than the sum of its proper divisors (267924902215).

1305421325345 is a wasteful number, since it uses less digits than its factorization.

1305421325345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140106195.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 1305421325345 in words is "one trillion, three hundred five billion, four hundred twenty-one million, three hundred twenty-five thousand, three hundred forty-five".