2812171825 has 12 divisors (see below), whose sum is σ = 3488245488. Its totient is φ = 2248994000.

The previous prime is 2812171801. The next prime is 2812171829. The reversal of 2812171825 is 5281712182.

It is not a de Polignac number, because 2812171825 - 2²³ = 2803783217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2812171829) 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 11 ways as a sum of consecutive naturals, for example, 66150 + ... + 100000.

It is an arithmetic number, because the mean of its divisors is an integer number (290687124).

Almost surely, 2^2812171825 is an apocalyptic number.

2812171825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2812171825 is a deficient number, since it is larger than the sum of its proper divisors (676073663).

2812171825 is a wasteful number, since it uses less digits than its factorization.

2812171825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37184 (or 37179 counting only the distinct ones).

The product of its digits is 17920, while the sum is 37.

The square root of 2812171825 is about 53029.9144351563. The cubic root of 2812171825 is about 1411.4991390529.

The spelling of 2812171825 in words is "two billion, eight hundred twelve million, one hundred seventy-one thousand, eight hundred twenty-five".