1325021807 has 2 divisors, whose sum is σ = 1325021808. Its totient is φ = 1325021806.

The previous prime is 1325021779. The next prime is 1325021833. The reversal of 1325021807 is 7081205231.

It is a strong prime.

It is an emirp because it is prime and its reverse (7081205231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325021807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1325021807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325021857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662510903 + 662510904.

It is an arithmetic number, because the mean of its divisors is an integer number (662510904).

Almost surely, 2^1325021807 is an apocalyptic number.

1325021807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325021807 is an equidigital number, since it uses as much as digits as its factorization.

1325021807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1325021807 is about 36400.8489873519. The cubic root of 1325021807 is about 1098.3506430408.

The spelling of 1325021807 in words is "one billion, three hundred twenty-five million, twenty-one thousand, eight hundred seven".