2125967009 has 2 divisors, whose sum is σ = 2125967010. Its totient is φ = 2125967008.

The previous prime is 2125966963. The next prime is 2125967021. The reversal of 2125967009 is 9007695212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1540327009 + 585640000 = 39247^2 + 24200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125967009 - 2²⁸ = 1857531553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2125967089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062983504 + 1062983505.

It is an arithmetic number, because the mean of its divisors is an integer number (1062983505).

Almost surely, 2^2125967009 is an apocalyptic number.

It is an amenable number.

2125967009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125967009 is an equidigital number, since it uses as much as digits as its factorization.

2125967009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 2125967009 is about 46108.2097787368. The cubic root of 2125967009 is about 1285.8357816327.

The spelling of 2125967009 in words is "two billion, one hundred twenty-five million, nine hundred sixty-seven thousand, nine".