1325228539 has 2 divisors, whose sum is σ = 1325228540. Its totient is φ = 1325228538.

The previous prime is 1325228503. The next prime is 1325228543. The reversal of 1325228539 is 9358225231.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9358225231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1325228539 - 2¹¹ = 1325226491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325298539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662614269 + 662614270.

It is an arithmetic number, because the mean of its divisors is an integer number (662614270).

Almost surely, 2^1325228539 is an apocalyptic number.

1325228539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325228539 is an equidigital number, since it uses as much as digits as its factorization.

1325228539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 1325228539 is about 36403.6885356415. The cubic root of 1325228539 is about 1098.4077622057.

The spelling of 1325228539 in words is "one billion, three hundred twenty-five million, two hundred twenty-eight thousand, five hundred thirty-nine".