1020505204325 has 6 divisors (see below), whose sum is σ = 1265426453394. Its totient is φ = 816404163440.

The previous prime is 1020505204319. The next prime is 1020505204337. The reversal of 1020505204325 is 5234025050201.

It can be written as a sum of positive squares in 3 ways, for example, as 4987466884 + 1015517737441 = 70622^2 + 1007729^2 .

It is not a de Polignac number, because 1020505204325 - 2⁴ = 1020505204309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20410104062 + ... + 20410104111.

It is an arithmetic number, because the mean of its divisors is an integer number (210904408899).

Almost surely, 2^{1020505204325} is an apocalyptic number.

It is an amenable number.

1020505204325 is a deficient number, since it is larger than the sum of its proper divisors (244921249069).

1020505204325 is an equidigital number, since it uses as much as digits as its factorization.

1020505204325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40820208183 (or 40820208178 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 1020505204325 in words is "one trillion, twenty billion, five hundred five million, two hundred four thousand, three hundred twenty-five".