1305500425 has 24 divisors (see below), whose sum is σ = 1659911616. Its totient is φ = 1017992640.

The previous prime is 1305500423. The next prime is 1305500477. The reversal of 1305500425 is 5240055031.

It is not a de Polignac number, because 1305500425 - 2¹ = 1305500423 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305500425.

It is not an unprimeable number, because it can be changed into a prime (1305500423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 694587 + ... + 696463.

It is an arithmetic number, because the mean of its divisors is an integer number (69162984).

Almost surely, 2^1305500425 is an apocalyptic number.

It is an amenable number.

1305500425 is a deficient number, since it is larger than the sum of its proper divisors (354411191).

1305500425 is a wasteful number, since it uses less digits than its factorization.

1305500425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2572 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1305500425 is about 36131.7094115404. The cubic root of 1305500425 is about 1092.9299799701.

Adding to 1305500425 its reverse (5240055031), we get a palindrome (6545555456).

The spelling of 1305500425 in words is "one billion, three hundred five million, five hundred thousand, four hundred twenty-five".