2857512825 has 72 divisors (see below), whose sum is σ = 5336622720. Its totient is φ = 1459785600.

The previous prime is 2857512821. The next prime is 2857512859. The reversal of 2857512825 is 5282157582.

2857512825 is a `hidden beast` number, since 2 + 8 + 57 + 512 + 82 + 5 = 666.

It is not a de Polignac number, because 2857512825 - 2² = 2857512821 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2857512821) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 853104 + ... + 856446.

It is an arithmetic number, because the mean of its divisors is an integer number (74119760).

Almost surely, 2^2857512825 is an apocalyptic number.

2857512825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2857512825 is a deficient number, since it is larger than the sum of its proper divisors (2479109895).

2857512825 is a wasteful number, since it uses less digits than its factorization.

2857512825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519 (or 3511 counting only the distinct ones).

The product of its digits is 448000, while the sum is 45.

The square root of 2857512825 is about 53455.7090028745. The cubic root of 2857512825 is about 1419.0446567897.

The spelling of 2857512825 in words is "two billion, eight hundred fifty-seven million, five hundred twelve thousand, eight hundred twenty-five".