1304787625 has 16 divisors (see below), whose sum is σ = 1637814672. Its totient is φ = 1037779200.

The previous prime is 1304787611. The next prime is 1304787637. The reversal of 1304787625 is 5267874031.

It can be written as a sum of positive squares in 8 ways, for example, as 415018384 + 889769241 = 20372^2 + 29829^2 .

It is not a de Polignac number, because 1304787625 - 2²⁹ = 767916713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8544 + ... + 51793.

It is an arithmetic number, because the mean of its divisors is an integer number (102363417).

Almost surely, 2^1304787625 is an apocalyptic number.

It is an amenable number.

1304787625 is a deficient number, since it is larger than the sum of its proper divisors (333027047).

1304787625 is an equidigital number, since it uses as much as digits as its factorization.

1304787625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60525 (or 60515 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 1304787625 is about 36121.8441528115. The cubic root of 1304787625 is about 1092.7310314028.

The spelling of 1304787625 in words is "one billion, three hundred four million, seven hundred eighty-seven thousand, six hundred twenty-five".