125705523 has 8 divisors (see below), whose sum is σ = 167915968. Its totient is φ = 83649384.

The previous prime is 125705521. The next prime is 125705533. The reversal of 125705523 is 325507521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125705523 - 2¹ = 125705521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125705521) 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 in 7 ways as a sum of consecutive naturals, for example, 36661 + ... + 39942.

It is an arithmetic number, because the mean of its divisors is an integer number (20989496).

Almost surely, 2^125705523 is an apocalyptic number.

125705523 is a deficient number, since it is larger than the sum of its proper divisors (42210445).

125705523 is an equidigital number, since it uses as much as digits as its factorization.

125705523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77153.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 125705523 is about 11211.8474392047. The cubic root of 125705523 is about 500.9389330392.

The spelling of 125705523 in words is "one hundred twenty-five million, seven hundred five thousand, five hundred twenty-three".