1316425236605 has 4 divisors (see below), whose sum is σ = 1579710283932. Its totient is φ = 1053140189280.

The previous prime is 1316425236601. The next prime is 1316425236631. The reversal of 1316425236605 is 5066325246131.

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 498149405209 + 818275831396 = 705797^2 + 904586^2 .

It is not a de Polignac number, because 1316425236605 - 2² = 1316425236601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316425236601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131642523656 + ... + 131642523665.

It is an arithmetic number, because the mean of its divisors is an integer number (394927570983).

Almost surely, 2^{1316425236605} is an apocalyptic number.

It is an amenable number.

1316425236605 is a deficient number, since it is larger than the sum of its proper divisors (263285047327).

1316425236605 is an equidigital number, since it uses as much as digits as its factorization.

1316425236605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263285047326.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 1316425236605 in words is "one trillion, three hundred sixteen billion, four hundred twenty-five million, two hundred thirty-six thousand, six hundred five".