125990393791 has 2 divisors, whose sum is σ = 125990393792. Its totient is φ = 125990393790.

The previous prime is 125990393743. The next prime is 125990393803. The reversal of 125990393791 is 197393099521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125990393791 - 2³¹ = 123842910143 is a prime.

It is a super-2 number, since 2×125990393791² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125990393891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62995196895 + 62995196896.

It is an arithmetic number, because the mean of its divisors is an integer number (62995196896).

Almost surely, 2^125990393791 is an apocalyptic number.

125990393791 is a deficient number, since it is larger than the sum of its proper divisors (1).

125990393791 is an equidigital number, since it uses as much as digits as its factorization.

125990393791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4133430, while the sum is 58.

The spelling of 125990393791 in words is "one hundred twenty-five billion, nine hundred ninety million, three hundred ninety-three thousand, seven hundred ninety-one".