125105437 has 2 divisors, whose sum is σ = 125105438. Its totient is φ = 125105436.

The previous prime is 125105423. The next prime is 125105467. The reversal of 125105437 is 734501521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111957561 + 13147876 = 10581^2 + 3626^2 .

It is a cyclic number.

It is not a de Polignac number, because 125105437 - 2¹¹ = 125103389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125105417) 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, 62552718 + 62552719.

It is an arithmetic number, because the mean of its divisors is an integer number (62552719).

Almost surely, 2^125105437 is an apocalyptic number.

It is an amenable number.

125105437 is a deficient number, since it is larger than the sum of its proper divisors (1).

125105437 is an equidigital number, since it uses as much as digits as its factorization.

125105437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 125105437 is about 11185.0541795737. The cubic root of 125105437 is about 500.1405431582.

Adding to 125105437 its reverse (734501521), we get a palindrome (859606958).

The spelling of 125105437 in words is "one hundred twenty-five million, one hundred five thousand, four hundred thirty-seven".