1325501797 has 2 divisors, whose sum is σ = 1325501798. Its totient is φ = 1325501796.

The previous prime is 1325501791. The next prime is 1325501839. The reversal of 1325501797 is 7971055231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1307473281 + 18028516 = 36159^2 + 4246^2 .

It is an emirp because it is prime and its reverse (7971055231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325501797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325501791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662750898 + 662750899.

It is an arithmetic number, because the mean of its divisors is an integer number (662750899).

Almost surely, 2^1325501797 is an apocalyptic number.

It is an amenable number.

1325501797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325501797 is an equidigital number, since it uses as much as digits as its factorization.

1325501797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 1325501797 is about 36407.4415058241. The cubic root of 1325501797 is about 1098.4832531046.

The spelling of 1325501797 in words is "one billion, three hundred twenty-five million, five hundred one thousand, seven hundred ninety-seven".