1285182625 has 8 divisors (see below), whose sum is σ = 1603908072. Its totient is φ = 1028146000.

The previous prime is 1285182623. The next prime is 1285182631. The reversal of 1285182625 is 5262815821.

It can be written as a sum of positive squares in 4 ways, for example, as 33721249 + 1251461376 = 5807^2 + 35376^2 .

It is not a de Polignac number, because 1285182625 - 2¹ = 1285182623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285182623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5140606 + ... + 5140855.

It is an arithmetic number, because the mean of its divisors is an integer number (200488509).

Almost surely, 2^1285182625 is an apocalyptic number.

It is an amenable number.

1285182625 is a deficient number, since it is larger than the sum of its proper divisors (318725447).

1285182625 is an equidigital number, since it uses as much as digits as its factorization.

1285182625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10281476 (or 10281466 counting only the distinct ones).

The product of its digits is 76800, while the sum is 40.

The square root of 1285182625 is about 35849.4438590057. The cubic root of 1285182625 is about 1087.2304700431.

The spelling of 1285182625 in words is "one billion, two hundred eighty-five million, one hundred eighty-two thousand, six hundred twenty-five".