1325491 has 2 divisors, whose sum is σ = 1325492. Its totient is φ = 1325490.

The previous prime is 1325483. The next prime is 1325501. The reversal of 1325491 is 1945231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1325491 - 2³ = 1325483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662745 + 662746.

It is an arithmetic number, because the mean of its divisors is an integer number (662746).

2^1325491 is an apocalyptic number.

1325491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325491 is an equidigital number, since it uses as much as digits as its factorization.

1325491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 1325491 is about 1151.2997003387. The cubic root of 1325491 is about 109.8480270497.

The spelling of 1325491 in words is "one million, three hundred twenty-five thousand, four hundred ninety-one".