1325411012521 has 2 divisors, whose sum is σ = 1325411012522. Its totient is φ = 1325411012520.

The previous prime is 1325411012507. The next prime is 1325411012581. The reversal of 1325411012521 is 1252101145231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1250228114496 + 75182898025 = 1118136^2 + 274195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325411012521 is a prime.

It is a super-2 number, since 2×1325411012521² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1325411012521.

It is not a weakly prime, because it can be changed into another prime (1325411012501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662705506260 + 662705506261.

It is an arithmetic number, because the mean of its divisors is an integer number (662705506261).

Almost surely, 2^{1325411012521} is an apocalyptic number.

It is an amenable number.

1325411012521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325411012521 is an equidigital number, since it uses as much as digits as its factorization.

1325411012521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1325411012521 its reverse (1252101145231), we get a palindrome (2577512157752).

The spelling of 1325411012521 in words is "one trillion, three hundred twenty-five billion, four hundred eleven million, twelve thousand, five hundred twenty-one".