2179512825 has 48 divisors (see below), whose sum is σ = 4143068160. Its totient is φ = 990342720.

The previous prime is 2179512707. The next prime is 2179512827. The reversal of 2179512825 is 5282159712.

It is not a de Polignac number, because 2179512825 - 2¹⁰ = 2179511801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2179512827) 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 47 ways as a sum of consecutive naturals, for example, 75246 + ... + 100104.

It is an arithmetic number, because the mean of its divisors is an integer number (86313920).

Almost surely, 2^2179512825 is an apocalyptic number.

2179512825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2179512825 is a deficient number, since it is larger than the sum of its proper divisors (1963555335).

2179512825 is a wasteful number, since it uses less digits than its factorization.

2179512825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25046 (or 25041 counting only the distinct ones).

The product of its digits is 100800, while the sum is 42.

The square root of 2179512825 is about 46685.2527571609. The cubic root of 2179512825 is about 1296.5416611325.

The spelling of 2179512825 in words is "two billion, one hundred seventy-nine million, five hundred twelve thousand, eight hundred twenty-five".