1325857331 has 2 divisors, whose sum is σ = 1325857332. Its totient is φ = 1325857330.

The previous prime is 1325857301. The next prime is 1325857339. The reversal of 1325857331 is 1337585231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1325857331 - 2¹⁴ = 1325840947 is a prime.

It is a super-2 number, since 2×1325857331² = 3515795324332887122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1325857339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662928665 + 662928666.

It is an arithmetic number, because the mean of its divisors is an integer number (662928666).

Almost surely, 2^1325857331 is an apocalyptic number.

1325857331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325857331 is an equidigital number, since it uses as much as digits as its factorization.

1325857331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 1325857331 is about 36412.3238890352. The cubic root of 1325857331 is about 1098.5814582353.

The spelling of 1325857331 in words is "one billion, three hundred twenty-five million, eight hundred fifty-seven thousand, three hundred thirty-one".