1325351509 has 2 divisors, whose sum is σ = 1325351510. Its totient is φ = 1325351508.

The previous prime is 1325351491. The next prime is 1325351513. The reversal of 1325351509 is 9051535231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1053002500 + 272349009 = 32450^2 + 16503^2 .

It is an emirp because it is prime and its reverse (9051535231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1325351509 - 2⁵ = 1325351477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325351519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662675754 + 662675755.

It is an arithmetic number, because the mean of its divisors is an integer number (662675755).

Almost surely, 2^1325351509 is an apocalyptic number.

It is an amenable number.

1325351509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325351509 is an equidigital number, since it uses as much as digits as its factorization.

1325351509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 1325351509 is about 36405.3774736645. The cubic root of 1325351509 is about 1098.4417354717.

The spelling of 1325351509 in words is "one billion, three hundred twenty-five million, three hundred fifty-one thousand, five hundred nine".