1325814521 has 2 divisors, whose sum is σ = 1325814522. Its totient is φ = 1325814520.

The previous prime is 1325814473. The next prime is 1325814533. The reversal of 1325814521 is 1254185231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1058851600 + 266962921 = 32540^2 + 16339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325814521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325814121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662907260 + 662907261.

It is an arithmetic number, because the mean of its divisors is an integer number (662907261).

Almost surely, 2^1325814521 is an apocalyptic number.

It is an amenable number.

1325814521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325814521 is an equidigital number, since it uses as much as digits as its factorization.

1325814521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 32.

The square root of 1325814521 is about 36411.7360338669. The cubic root of 1325814521 is about 1098.5696342435.

Adding to 1325814521 its reverse (1254185231), we get a palindrome (2579999752).

The spelling of 1325814521 in words is "one billion, three hundred twenty-five million, eight hundred fourteen thousand, five hundred twenty-one".