1305204425 has 36 divisors (see below), whose sum is σ = 1906663680. Its totient is φ = 883602720.

The previous prime is 1305204401. The next prime is 1305204473. The reversal of 1305204425 is 5244025031.

It is a happy number.

It is not a de Polignac number, because 1305204425 - 2⁸ = 1305204169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1305204394 and 1305204403.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90032 + ... + 103518.

It is an arithmetic number, because the mean of its divisors is an integer number (52962880).

Almost surely, 2^1305204425 is an apocalyptic number.

It is an amenable number.

1305204425 is a deficient number, since it is larger than the sum of its proper divisors (601459255).

1305204425 is a wasteful number, since it uses less digits than its factorization.

1305204425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13590 (or 13578 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1305204425 is about 36127.6130542830. The cubic root of 1305204425 is about 1092.8473726366.

Adding to 1305204425 its reverse (5244025031), we get a palindrome (6549229456).

The spelling of 1305204425 in words is "one billion, three hundred five million, two hundred four thousand, four hundred twenty-five".