2125840001 has 2 divisors, whose sum is σ = 2125840002. Its totient is φ = 2125840000.

The previous prime is 2125839997. The next prime is 2125840103. The reversal of 2125840001 is 1000485212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1701480001 + 424360000 = 41249^2 + 20600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125840001 - 2² = 2125839997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2125840901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062920000 + 1062920001.

It is an arithmetic number, because the mean of its divisors is an integer number (1062920001).

Almost surely, 2^2125840001 is an apocalyptic number.

It is an amenable number.

2125840001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125840001 is an equidigital number, since it uses as much as digits as its factorization.

2125840001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2125840001 is about 46106.8324763261. The cubic root of 2125840001 is about 1285.8101752957.

The spelling of 2125840001 in words is "two billion, one hundred twenty-five million, eight hundred forty thousand, one".