2125231639 has 2 divisors, whose sum is σ = 2125231640. Its totient is φ = 2125231638.

The previous prime is 2125231631. The next prime is 2125231649. The reversal of 2125231639 is 9361325212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2125231639 - 2³ = 2125231631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125231631) 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, 1062615819 + 1062615820.

It is an arithmetic number, because the mean of its divisors is an integer number (1062615820).

Almost surely, 2^2125231639 is an apocalyptic number.

2125231639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125231639 is an equidigital number, since it uses as much as digits as its factorization.

2125231639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 34.

The square root of 2125231639 is about 46100.2346957149. The cubic root of 2125231639 is about 1285.6875080708.

The spelling of 2125231639 in words is "two billion, one hundred twenty-five million, two hundred thirty-one thousand, six hundred thirty-nine".