125953703989 has 2 divisors, whose sum is σ = 125953703990. Its totient is φ = 125953703988.

The previous prime is 125953703983. The next prime is 125953704053. The reversal of 125953703989 is 989307359521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123751279089 + 2202424900 = 351783^2 + 46930^2 .

It is a cyclic number.

It is not a de Polignac number, because 125953703989 - 2⁷ = 125953703861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125953703983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62976851994 + 62976851995.

It is an arithmetic number, because the mean of its divisors is an integer number (62976851995).

Almost surely, 2^125953703989 is an apocalyptic number.

It is an amenable number.

125953703989 is a deficient number, since it is larger than the sum of its proper divisors (1).

125953703989 is an equidigital number, since it uses as much as digits as its factorization.

125953703989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18370800, while the sum is 61.

The spelling of 125953703989 in words is "one hundred twenty-five billion, nine hundred fifty-three million, seven hundred three thousand, nine hundred eighty-nine".