1325253539 has 2 divisors, whose sum is σ = 1325253540. Its totient is φ = 1325253538.

The previous prime is 1325253443. The next prime is 1325253541. The reversal of 1325253539 is 9353525231.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9353525231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1325253539 - 2²⁰ = 1324204963 is a prime.

Together with 1325253541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1325253599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662626769 + 662626770.

It is an arithmetic number, because the mean of its divisors is an integer number (662626770).

Almost surely, 2^1325253539 is an apocalyptic number.

1325253539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325253539 is an equidigital number, since it uses as much as digits as its factorization.

1325253539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121500, while the sum is 38.

The square root of 1325253539 is about 36404.0319058205. The cubic root of 1325253539 is about 1098.4146691959.

The spelling of 1325253539 in words is "one billion, three hundred twenty-five million, two hundred fifty-three thousand, five hundred thirty-nine".