125443105 has 4 divisors (see below), whose sum is σ = 150531732. Its totient is φ = 100354480.

The previous prime is 125443079. The next prime is 125443117. The reversal of 125443105 is 501344521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56685841 + 68757264 = 7529^2 + 8292^2 .

It is not a de Polignac number, because 125443105 - 2¹⁹ = 124918817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125443105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12544306 + ... + 12544315.

It is an arithmetic number, because the mean of its divisors is an integer number (37632933).

Almost surely, 2^125443105 is an apocalyptic number.

It is an amenable number.

125443105 is a deficient number, since it is larger than the sum of its proper divisors (25088627).

125443105 is an equidigital number, since it uses as much as digits as its factorization.

125443105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25088626.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 125443105 is about 11200.1386152137. The cubic root of 125443105 is about 500.5901099332.

Adding to 125443105 its reverse (501344521), we get a palindrome (626787626).

The spelling of 125443105 in words is "one hundred twenty-five million, four hundred forty-three thousand, one hundred five".