1303205425 has 24 divisors (see below), whose sum is σ = 1654358400. Its totient is φ = 1017910080.

The previous prime is 1303205413. The next prime is 1303205441. The reversal of 1303205425 is 5245023031.

It is a de Polignac number, because none of the positive numbers 2^k-1303205425 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1303205425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 596986 + ... + 599164.

It is an arithmetic number, because the mean of its divisors is an integer number (68931600).

Almost surely, 2^1303205425 is an apocalyptic number.

It is an amenable number.

1303205425 is a deficient number, since it is larger than the sum of its proper divisors (351152975).

1303205425 is a wasteful number, since it uses less digits than its factorization.

1303205425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1303205425 is about 36099.9366342934. The cubic root of 1303205425 is about 1092.2891668134.

Adding to 1303205425 its reverse (5245023031), we get a palindrome (6548228456).

The spelling of 1303205425 in words is "one billion, three hundred three million, two hundred five thousand, four hundred twenty-five".