1305320502025 has 12 divisors (see below), whose sum is σ = 1628906965132. Its totient is φ = 1037605083840.

The previous prime is 1305320502011. The next prime is 1305320502029. The reversal of 1305320502025 is 5202050235031.

It can be written as a sum of positive squares in 6 ways, for example, as 252277161984 + 1053043340041 = 502272^2 + 1026179^2 .

It is not a de Polignac number, because 1305320502025 - 2⁵ = 1305320501993 is a prime.

It is a super-2 number, since 2×1305320502025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305320501984 and 1305320502002.

It is not an unprimeable number, because it can be changed into a prime (1305320502029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166278942 + ... + 166286791.

Almost surely, 2^{1305320502025} is an apocalyptic number.

It is an amenable number.

1305320502025 is a deficient number, since it is larger than the sum of its proper divisors (323586463107).

1305320502025 is a wasteful number, since it uses less digits than its factorization.

1305320502025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332565900 (or 332565895 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 1305320502025 its reverse (5202050235031), we get a palindrome (6507370737056).

The spelling of 1305320502025 in words is "one trillion, three hundred five billion, three hundred twenty million, five hundred two thousand, twenty-five".