1305421325387 has 2 divisors, whose sum is σ = 1305421325388. Its totient is φ = 1305421325386.

The previous prime is 1305421325309. The next prime is 1305421325389. The reversal of 1305421325387 is 7835231245031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1305421325387 - 2²⁴ = 1305404548171 is a prime.

Together with 1305421325389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1305421325389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652710662693 + 652710662694.

It is an arithmetic number, because the mean of its divisors is an integer number (652710662694).

Almost surely, 2^{1305421325387} is an apocalyptic number.

1305421325387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305421325387 is an equidigital number, since it uses as much as digits as its factorization.

1305421325387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 1305421325387 in words is "one trillion, three hundred five billion, four hundred twenty-one million, three hundred twenty-five thousand, three hundred eighty-seven".