1325396172899 has 4 divisors (see below), whose sum is σ = 1325399000640. Its totient is φ = 1325393345160.

The previous prime is 1325396172889. The next prime is 1325396172923. The reversal of 1325396172899 is 9982716935231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325396172899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325396172839) 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, 524192 + ... + 1710429.

It is an arithmetic number, because the mean of its divisors is an integer number (331349750160).

Almost surely, 2^{1325396172899} is an apocalyptic number.

1325396172899 is a deficient number, since it is larger than the sum of its proper divisors (2827741).

1325396172899 is an equidigital number, since it uses as much as digits as its factorization.

1325396172899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827740.

The product of its digits is 44089920, while the sum is 65.

The spelling of 1325396172899 in words is "one trillion, three hundred twenty-five billion, three hundred ninety-six million, one hundred seventy-two thousand, eight hundred ninety-nine".