2125318187 has 2 divisors, whose sum is σ = 2125318188. Its totient is φ = 2125318186.

The previous prime is 2125318163. The next prime is 2125318219. The reversal of 2125318187 is 7818135212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2125318187 - 2¹² = 2125314091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2125318187.

It is not a weakly prime, because it can be changed into another prime (2125318687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062659093 + 1062659094.

It is an arithmetic number, because the mean of its divisors is an integer number (1062659094).

Almost surely, 2^2125318187 is an apocalyptic number.

2125318187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125318187 is an equidigital number, since it uses as much as digits as its factorization.

2125318187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 2125318187 is about 46101.1733798610. The cubic root of 2125318187 is about 1285.7049606267.

The spelling of 2125318187 in words is "two billion, one hundred twenty-five million, three hundred eighteen thousand, one hundred eighty-seven".