1285108655 has 8 divisors (see below), whose sum is σ = 1567411584. Its totient is φ = 1011232800.

The previous prime is 1285108631. The next prime is 1285108661. The reversal of 1285108655 is 5568015821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1285108655 - 2⁸ = 1285108399 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2106431 + ... + 2107040.

It is an arithmetic number, because the mean of its divisors is an integer number (195926448).

Almost surely, 2^1285108655 is an apocalyptic number.

1285108655 is a deficient number, since it is larger than the sum of its proper divisors (282302929).

1285108655 is an equidigital number, since it uses as much as digits as its factorization.

1285108655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213537.

The product of its (nonzero) digits is 96000, while the sum is 41.

The square root of 1285108655 is about 35848.4121684629. The cubic root of 1285108655 is about 1087.2096107558.

The spelling of 1285108655 in words is "one billion, two hundred eighty-five million, one hundred eight thousand, six hundred fifty-five".