1345631025605 has 4 divisors (see below), whose sum is σ = 1614757230732. Its totient is φ = 1076504820480.

The previous prime is 1345631025527. The next prime is 1345631025643. The reversal of 1345631025605 is 5065201365431.

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 430071016804 + 915560008801 = 655798^2 + 956849^2 .

It is not a de Polignac number, because 1345631025605 - 2³⁸ = 1070753118661 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, 134563102556 + ... + 134563102565.

It is an arithmetic number, because the mean of its divisors is an integer number (403689307683).

Almost surely, 2^{1345631025605} is an apocalyptic number.

It is an amenable number.

1345631025605 is a deficient number, since it is larger than the sum of its proper divisors (269126205127).

1345631025605 is an equidigital number, since it uses as much as digits as its factorization.

1345631025605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269126205126.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 1345631025605 in words is "one trillion, three hundred forty-five billion, six hundred thirty-one million, twenty-five thousand, six hundred five".