1325281238525 has 6 divisors (see below), whose sum is σ = 1643348735802. Its totient is φ = 1060224990800.

The previous prime is 1325281238513. The next prime is 1325281238539. The reversal of 1325281238525 is 5258321825231.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 248623898884 + 1076657339641 = 498622^2 + 1037621^2 .

It is not a de Polignac number, because 1325281238525 - 2¹² = 1325281234429 is a prime.

It is a super-2 number, since 2×1325281238525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1325281238525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26505624746 + ... + 26505624795.

It is an arithmetic number, because the mean of its divisors is an integer number (273891455967).

Almost surely, 2^{1325281238525} is an apocalyptic number.

It is an amenable number.

1325281238525 is a deficient number, since it is larger than the sum of its proper divisors (318067497277).

1325281238525 is an equidigital number, since it uses as much as digits as its factorization.

1325281238525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53011249551 (or 53011249546 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 47.

The spelling of 1325281238525 in words is "one trillion, three hundred twenty-five billion, two hundred eighty-one million, two hundred thirty-eight thousand, five hundred twenty-five".