2125840081 has 8 divisors (see below), whose sum is σ = 2157456384. Its totient is φ = 2094291360.

The previous prime is 2125840001. The next prime is 2125840103. The reversal of 2125840081 is 1800485212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2125840081 - 2¹⁷ = 2125709009 is a prime.

It is a super-2 number, since 2×2125840081² = 9038392099972173122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125840001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48336 + ... + 81166.

It is an arithmetic number, because the mean of its divisors is an integer number (269682048).

Almost surely, 2^2125840081 is an apocalyptic number.

It is an amenable number.

2125840081 is a deficient number, since it is larger than the sum of its proper divisors (31616303).

2125840081 is an equidigital number, since it uses as much as digits as its factorization.

2125840081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33791.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 2125840081 is about 46106.8333438765. The cubic root of 2125840081 is about 1285.8101914250.

The spelling of 2125840081 in words is "two billion, one hundred twenty-five million, eight hundred forty thousand, eighty-one".