125605559 has 2 divisors, whose sum is σ = 125605560. Its totient is φ = 125605558.

The previous prime is 125605541. The next prime is 125605577. The reversal of 125605559 is 955506521.

It is a balanced prime because it is at equal distance from previous prime (125605541) and next prime (125605577).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125605559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125605589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62802779 + 62802780.

It is an arithmetic number, because the mean of its divisors is an integer number (62802780).

Almost surely, 2^125605559 is an apocalyptic number.

125605559 is a deficient number, since it is larger than the sum of its proper divisors (1).

125605559 is an equidigital number, since it uses as much as digits as its factorization.

125605559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67500, while the sum is 38.

The square root of 125605559 is about 11207.3885896760. The cubic root of 125605559 is about 500.8061116695.

The spelling of 125605559 in words is "one hundred twenty-five million, six hundred five thousand, five hundred fifty-nine".