125638361 has 8 divisors (see below), whose sum is σ = 127776000. Its totient is φ = 123514560.

The previous prime is 125638349. The next prime is 125638367. The reversal of 125638361 is 163836521.

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

It is a cyclic number.

It is not a de Polignac number, because 125638361 - 2⁶ = 125638297 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125638367) 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, 15740 + ... + 22338.

It is an arithmetic number, because the mean of its divisors is an integer number (15972000).

Almost surely, 2^125638361 is an apocalyptic number.

It is an amenable number.

125638361 is a deficient number, since it is larger than the sum of its proper divisors (2137639).

125638361 is an equidigital number, since it uses as much as digits as its factorization.

125638361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919.

The product of its digits is 25920, while the sum is 35.

The square root of 125638361 is about 11208.8519037411. The cubic root of 125638361 is about 500.8497031910.

The spelling of 125638361 in words is "one hundred twenty-five million, six hundred thirty-eight thousand, three hundred sixty-one".