2125518851 has 2 divisors, whose sum is σ = 2125518852. Its totient is φ = 2125518850.

The previous prime is 2125518799. The next prime is 2125518883. The reversal of 2125518851 is 1588155212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125518851 is a prime.

It is not a weakly prime, because it can be changed into another prime (2125515851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062759425 + 1062759426.

It is an arithmetic number, because the mean of its divisors is an integer number (1062759426).

Almost surely, 2^2125518851 is an apocalyptic number.

2125518851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125518851 is an equidigital number, since it uses as much as digits as its factorization.

2125518851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32000, while the sum is 38.

The square root of 2125518851 is about 46103.3496722310. The cubic root of 2125518851 is about 1285.7454230513.

The spelling of 2125518851 in words is "two billion, one hundred twenty-five million, five hundred eighteen thousand, eight hundred fifty-one".