1325040491 has 2 divisors, whose sum is σ = 1325040492. Its totient is φ = 1325040490.

The previous prime is 1325040443. The next prime is 1325040539. The reversal of 1325040491 is 1940405231.

It is a balanced prime because it is at equal distance from previous prime (1325040443) and next prime (1325040539).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325040491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325040191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662520245 + 662520246.

It is an arithmetic number, because the mean of its divisors is an integer number (662520246).

Almost surely, 2^1325040491 is an apocalyptic number.

1325040491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325040491 is an equidigital number, since it uses as much as digits as its factorization.

1325040491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1325040491 is about 36401.1056288130. The cubic root of 1325040491 is about 1098.3558055941.

The spelling of 1325040491 in words is "one billion, three hundred twenty-five million, forty thousand, four hundred ninety-one".