2176438128825 has 48 divisors (see below), whose sum is σ = 3718970986496. Its totient is φ = 1121957006400.

The previous prime is 2176438128797. The next prime is 2176438128829. The reversal of 2176438128825 is 5288218346712.

It is not a de Polignac number, because 2176438128825 - 2²⁰ = 2176437080249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2176438128829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1344762 + ... + 2482188.

Almost surely, 2^{2176438128825} is an apocalyptic number.

2176438128825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2176438128825 is a deficient number, since it is larger than the sum of its proper divisors (1542532857671).

2176438128825 is a wasteful number, since it uses less digits than its factorization.

2176438128825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138294 (or 1138289 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 57.

The spelling of 2176438128825 in words is "two trillion, one hundred seventy-six billion, four hundred thirty-eight million, one hundred twenty-eight thousand, eight hundred twenty-five".