1305080725 has 24 divisors (see below), whose sum is σ = 1779886080. Its totient is φ = 943235520.

The previous prime is 1305080723. The next prime is 1305080741. The reversal of 1305080725 is 5270805031.

It is not a de Polignac number, because 1305080725 - 2¹ = 1305080723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305080723) 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, 27445 + ... + 57994.

It is an arithmetic number, because the mean of its divisors is an integer number (74161920).

Almost surely, 2^1305080725 is an apocalyptic number.

It is an amenable number.

1305080725 is a deficient number, since it is larger than the sum of its proper divisors (474805355).

1305080725 is a wasteful number, since it uses less digits than its factorization.

1305080725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85509 (or 85504 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1305080725 is about 36125.9010268256. The cubic root of 1305080725 is about 1092.8128468851.

Adding to 1305080725 its reverse (5270805031), we get a palindrome (6575885756).

The spelling of 1305080725 in words is "one billion, three hundred five million, eighty thousand, seven hundred twenty-five".