8120881425 has 12 divisors (see below), whose sum is σ = 13426524080. Its totient is φ = 4331136720.

The previous prime is 8120881399. The next prime is 8120881441. The reversal of 8120881425 is 5241880218.

It is not a de Polignac number, because 8120881425 - 2⁶ = 8120881361 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54139135 + ... + 54139284.

Almost surely, 2^8120881425 is an apocalyptic number.

It is an amenable number.

8120881425 is a deficient number, since it is larger than the sum of its proper divisors (5305642655).

8120881425 is a wasteful number, since it uses less digits than its factorization.

8120881425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108278432 (or 108278427 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 39.

The square root of 8120881425 is about 90115.9332471234. The cubic root of 8120881425 is about 2010.0231365372.

The spelling of 8120881425 in words is "eight billion, one hundred twenty million, eight hundred eighty-one thousand, four hundred twenty-five".