1325622013665 has 16 divisors (see below), whose sum is σ = 2166122780928. Its totient is φ = 691955887616.

The previous prime is 1325622013627. The next prime is 1325622013679. The reversal of 1325622013665 is 5663102265231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1325622013665 - 2⁶ = 1325622013601 is a prime.

It is a super-2 number, since 2×1325622013665² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940156752 + ... + 940158161.

It is an arithmetic number, because the mean of its divisors is an integer number (135382673808).

Almost surely, 2^{1325622013665} is an apocalyptic number.

1325622013665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325622013665 is a deficient number, since it is larger than the sum of its proper divisors (840500767263).

1325622013665 is a wasteful number, since it uses less digits than its factorization.

1325622013665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880314968.

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 1325622013665 its reverse (5663102265231), we get a palindrome (6988724278896).

The spelling of 1325622013665 in words is "one trillion, three hundred twenty-five billion, six hundred twenty-two million, thirteen thousand, six hundred sixty-five".