1285585945 has 16 divisors (see below), whose sum is σ = 1765307520. Its totient is φ = 880435584.

The previous prime is 1285585937. The next prime is 1285585957. The reversal of 1285585945 is 5495855821.

It is not a de Polignac number, because 1285585945 - 2³ = 1285585937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285585892 and 1285585901.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5614 + ... + 51016.

It is an arithmetic number, because the mean of its divisors is an integer number (110331720).

Almost surely, 2^1285585945 is an apocalyptic number.

It is an amenable number.

1285585945 is a deficient number, since it is larger than the sum of its proper divisors (479721575).

1285585945 is an equidigital number, since it uses as much as digits as its factorization.

1285585945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46224.

The product of its digits is 2880000, while the sum is 52.

The square root of 1285585945 is about 35855.0686096122. The cubic root of 1285585945 is about 1087.3441908280.

The spelling of 1285585945 in words is "one billion, two hundred eighty-five million, five hundred eighty-five thousand, nine hundred forty-five".