125957161 has 8 divisors (see below), whose sum is σ = 138952800. Its totient is φ = 113219040.

The previous prime is 125957159. The next prime is 125957197. The reversal of 125957161 is 161759521.

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

It is not a de Polignac number, because 125957161 - 2¹ = 125957159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125957161.

It is not an unprimeable number, because it can be changed into a prime (125957561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63351 + ... + 65308.

It is an arithmetic number, because the mean of its divisors is an integer number (17369100).

Almost surely, 2^125957161 is an apocalyptic number.

125957161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125957161 is a deficient number, since it is larger than the sum of its proper divisors (12995639).

125957161 is a wasteful number, since it uses less digits than its factorization.

125957161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128759.

The product of its digits is 18900, while the sum is 37.

The square root of 125957161 is about 11223.0637973773. The cubic root of 125957161 is about 501.2729710059.

The spelling of 125957161 in words is "one hundred twenty-five million, nine hundred fifty-seven thousand, one hundred sixty-one".