2855212985 has 16 divisors (see below), whose sum is σ = 3785533056. Its totient is φ = 2056336128.

The previous prime is 2855212961. The next prime is 2855213017. The reversal of 2855212985 is 5892125582.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855212985 is a prime.

It is a super-2 number, since 2×2855212985² = 16304482379425220450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728279 + ... + 732188.

It is an arithmetic number, because the mean of its divisors is an integer number (236595816).

Almost surely, 2^2855212985 is an apocalyptic number.

It is an amenable number.

2855212985 is a deficient number, since it is larger than the sum of its proper divisors (930320071).

2855212985 is a wasteful number, since it uses less digits than its factorization.

2855212985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460512.

The product of its digits is 576000, while the sum is 47.

The square root of 2855212985 is about 53434.1930321774. The cubic root of 2855212985 is about 1418.6638534120.

The spelling of 2855212985 in words is "two billion, eight hundred fifty-five million, two hundred twelve thousand, nine hundred eighty-five".