1305423021325 has 6 divisors (see below), whose sum is σ = 1618724546474. Its totient is φ = 1044338417040.

The previous prime is 1305423021307. The next prime is 1305423021337. The reversal of 1305423021325 is 5231203245031.

It can be written as a sum of positive squares in 3 ways, for example, as 141626526889 + 1163796494436 = 376333^2 + 1078794^2 .

It is not a de Polignac number, because 1305423021325 - 2⁷ = 1305423021197 is a prime.

It is a Duffinian number.

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, 26108460402 + ... + 26108460451.

Almost surely, 2^{1305423021325} is an apocalyptic number.

It is an amenable number.

1305423021325 is a deficient number, since it is larger than the sum of its proper divisors (313301525149).

1305423021325 is an equidigital number, since it uses as much as digits as its factorization.

1305423021325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52216920863 (or 52216920858 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 1305423021325 its reverse (5231203245031), we get a palindrome (6536626266356).

The spelling of 1305423021325 in words is "one trillion, three hundred five billion, four hundred twenty-three million, twenty-one thousand, three hundred twenty-five".