125750549 has 2 divisors, whose sum is σ = 125750550. Its totient is φ = 125750548.

The previous prime is 125750473. The next prime is 125750579. The reversal of 125750549 is 945057521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74269924 + 51480625 = 8618^2 + 7175^2 .

It is an emirp because it is prime and its reverse (945057521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125750549 - 2¹⁶ = 125685013 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 (125750579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62875274 + 62875275.

It is an arithmetic number, because the mean of its divisors is an integer number (62875275).

Almost surely, 2^125750549 is an apocalyptic number.

It is an amenable number.

125750549 is a deficient number, since it is larger than the sum of its proper divisors (1).

125750549 is an equidigital number, since it uses as much as digits as its factorization.

125750549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 125750549 is about 11213.8552246763. The cubic root of 125750549 is about 500.9987357256.

The spelling of 125750549 in words is "one hundred twenty-five million, seven hundred fifty thousand, five hundred forty-nine".