125554459 has 2 divisors, whose sum is σ = 125554460. Its totient is φ = 125554458.

The previous prime is 125554421. The next prime is 125554477. The reversal of 125554459 is 954455521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125554459 is a prime.

It is not a weakly prime, because it can be changed into another prime (125554859) 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, 62777229 + 62777230.

It is an arithmetic number, because the mean of its divisors is an integer number (62777230).

Almost surely, 2^125554459 is an apocalyptic number.

125554459 is a deficient number, since it is larger than the sum of its proper divisors (1).

125554459 is an equidigital number, since it uses as much as digits as its factorization.

125554459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 40.

The square root of 125554459 is about 11205.1086117003. The cubic root of 125554459 is about 500.7381882864.

The spelling of 125554459 in words is "one hundred twenty-five million, five hundred fifty-four thousand, four hundred fifty-nine".