125305161 has 8 divisors (see below), whose sum is σ = 167235264. Its totient is φ = 83455920.

The previous prime is 125305151. The next prime is 125305207. The reversal of 125305161 is 161503521.

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

It is not a de Polignac number, because 125305161 - 2⁶ = 125305097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125305121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16501 + ... + 22866.

It is an arithmetic number, because the mean of its divisors is an integer number (20904408).

Almost surely, 2^125305161 is an apocalyptic number.

It is an amenable number.

125305161 is a deficient number, since it is larger than the sum of its proper divisors (41930103).

125305161 is a wasteful number, since it uses less digits than its factorization.

125305161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40431.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 125305161 is about 11193.9787832566. The cubic root of 125305161 is about 500.4065506768.

Adding to 125305161 its reverse (161503521), we get a palindrome (286808682).

The spelling of 125305161 in words is "one hundred twenty-five million, three hundred five thousand, one hundred sixty-one".