1305312555005 has 4 divisors (see below), whose sum is σ = 1566375066012. Its totient is φ = 1044250044000.

The previous prime is 1305312554993. The next prime is 1305312555013. The reversal of 1305312555005 is 5005552135031.

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 804844031161 + 500468523844 = 897131^2 + 707438^2 .

It is not a de Polignac number, because 1305312555005 - 2⁴ = 1305312554989 is a prime.

It is a super-3 number, since 3×1305312555005³ (a number of 37 digits) contains 333 as substring.

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, 130531255496 + ... + 130531255505.

It is an arithmetic number, because the mean of its divisors is an integer number (391593766503).

Almost surely, 2^{1305312555005} is an apocalyptic number.

It is an amenable number.

1305312555005 is a deficient number, since it is larger than the sum of its proper divisors (261062511007).

1305312555005 is an equidigital number, since it uses as much as digits as its factorization.

1305312555005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261062511006.

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 1305312555005 in words is "one trillion, three hundred five billion, three hundred twelve million, five hundred fifty-five thousand, five".