125249959 has 2 divisors, whose sum is σ = 125249960. Its totient is φ = 125249958.

The previous prime is 125249953. The next prime is 125250061. The reversal of 125249959 is 959942521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125249959 - 2⁹ = 125249447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125249953) 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, 62624979 + 62624980.

It is an arithmetic number, because the mean of its divisors is an integer number (62624980).

Almost surely, 2^125249959 is an apocalyptic number.

125249959 is a deficient number, since it is larger than the sum of its proper divisors (1).

125249959 is an equidigital number, since it uses as much as digits as its factorization.

125249959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 46.

The square root of 125249959 is about 11191.5128110546. The cubic root of 125249959 is about 500.3330567638. Note that the first 3 decimals are identical.

The spelling of 125249959 in words is "one hundred twenty-five million, two hundred forty-nine thousand, nine hundred fifty-nine".