125424389 has 2 divisors, whose sum is σ = 125424390. Its totient is φ = 125424388.

The previous prime is 125424373. The next prime is 125424443. The reversal of 125424389 is 983424521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124701889 + 722500 = 11167^2 + 850^2 .

It is an emirp because it is prime and its reverse (983424521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125424389 - 2⁴ = 125424373 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 (125424319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62712194 + 62712195.

It is an arithmetic number, because the mean of its divisors is an integer number (62712195).

Almost surely, 2^125424389 is an apocalyptic number.

It is an amenable number.

125424389 is a deficient number, since it is larger than the sum of its proper divisors (1).

125424389 is an equidigital number, since it uses as much as digits as its factorization.

125424389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 125424389 is about 11199.3030586729. The cubic root of 125424389 is about 500.5652128282.

The spelling of 125424389 in words is "one hundred twenty-five million, four hundred twenty-four thousand, three hundred eighty-nine".