1325503537 has 2 divisors, whose sum is σ = 1325503538. Its totient is φ = 1325503536.

The previous prime is 1325503489. The next prime is 1325503561. The reversal of 1325503537 is 7353055231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 909384336 + 416119201 = 30156^2 + 20399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325503537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325503237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662751768 + 662751769.

It is an arithmetic number, because the mean of its divisors is an integer number (662751769).

Almost surely, 2^1325503537 is an apocalyptic number.

It is an amenable number.

1325503537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325503537 is an equidigital number, since it uses as much as digits as its factorization.

1325503537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 34.

The square root of 1325503537 is about 36407.4654020298. The cubic root of 1325503537 is about 1098.4837337678.

Adding to 1325503537 its reverse (7353055231), we get a palindrome (8678558768).

The spelling of 1325503537 in words is "one billion, three hundred twenty-five million, five hundred three thousand, five hundred thirty-seven".