1325711399 has 4 divisors (see below), whose sum is σ = 1327535664. Its totient is φ = 1323887136.

The previous prime is 1325711389. The next prime is 1325711407. The reversal of 1325711399 is 9931175231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9931175231 = 103 ⋅96419177.

It is a cyclic number.

It is not a de Polignac number, because 1325711399 - 2⁸ = 1325711143 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 (1325711389) 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, 911042 + ... + 912495.

It is an arithmetic number, because the mean of its divisors is an integer number (331883916).

Almost surely, 2^1325711399 is an apocalyptic number.

1325711399 is a deficient number, since it is larger than the sum of its proper divisors (1824265).

1325711399 is an equidigital number, since it uses as much as digits as its factorization.

1325711399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824264.

The product of its digits is 51030, while the sum is 41.

The square root of 1325711399 is about 36410.3199519037. The cubic root of 1325711399 is about 1098.5411512158.

The spelling of 1325711399 in words is "one billion, three hundred twenty-five million, seven hundred eleven thousand, three hundred ninety-nine".