125717638 has 16 divisors (see below), whose sum is σ = 198182160. Its totient is φ = 59736096.

The previous prime is 125717569. The next prime is 125717651. The reversal of 125717638 is 836717521.

It is a super-3 number, since 3×125717638³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125717638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16573 + ... + 22936.

It is an arithmetic number, because the mean of its divisors is an integer number (12386385).

Almost surely, 2^125717638 is an apocalyptic number.

125717638 is a deficient number, since it is larger than the sum of its proper divisors (72464522).

125717638 is a wasteful number, since it uses less digits than its factorization.

125717638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39591.

The product of its digits is 70560, while the sum is 40.

The square root of 125717638 is about 11212.3877028936. The cubic root of 125717638 is about 500.9550253584.

The spelling of 125717638 in words is "one hundred twenty-five million, seven hundred seventeen thousand, six hundred thirty-eight".