125693539 has 2 divisors, whose sum is σ = 125693540. Its totient is φ = 125693538.

The previous prime is 125693537. The next prime is 125693549. The reversal of 125693539 is 935396521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125693539 - 2¹ = 125693537 is a prime.

Together with 125693537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 125693495 and 125693504.

It is not a weakly prime, because it can be changed into another prime (125693537) 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, 62846769 + 62846770.

It is an arithmetic number, because the mean of its divisors is an integer number (62846770).

Almost surely, 2^125693539 is an apocalyptic number.

125693539 is a deficient number, since it is larger than the sum of its proper divisors (1).

125693539 is an equidigital number, since it uses as much as digits as its factorization.

125693539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 43.

The square root of 125693539 is about 11211.3129917954. The cubic root of 125693539 is about 500.9230137096.

The spelling of 125693539 in words is "one hundred twenty-five million, six hundred ninety-three thousand, five hundred thirty-nine".