125105775 has 24 divisors (see below), whose sum is σ = 211248384. Its totient is φ = 65301600.

The previous prime is 125105767. The next prime is 125105777. The reversal of 125105775 is 577501521.

It is not a de Polignac number, because 125105775 - 2³ = 125105767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125105777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14221 + ... + 21270.

It is an arithmetic number, because the mean of its divisors is an integer number (8802016).

Almost surely, 2^125105775 is an apocalyptic number.

125105775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125105775 is a deficient number, since it is larger than the sum of its proper divisors (86142609).

125105775 is a wasteful number, since it uses less digits than its factorization.

125105775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35551 (or 35546 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 33.

The square root of 125105775 is about 11185.0692890120. The cubic root of 125105775 is about 500.1409935712.

The spelling of 125105775 in words is "one hundred twenty-five million, one hundred five thousand, seven hundred seventy-five".