125042889 has 16 divisors (see below), whose sum is σ = 173168640. Its totient is φ = 80200080.

The previous prime is 125042887. The next prime is 125042899. The reversal of 125042889 is 988240521.

It is not a de Polignac number, because 125042889 - 2¹ = 125042887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125042887) 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 15 ways as a sum of consecutive naturals, for example, 804 + ... + 15834.

It is an arithmetic number, because the mean of its divisors is an integer number (10823040).

Almost surely, 2^125042889 is an apocalyptic number.

It is an amenable number.

125042889 is a deficient number, since it is larger than the sum of its proper divisors (48125751).

125042889 is a wasteful number, since it uses less digits than its factorization.

125042889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 125042889 is about 11182.2577773900. The cubic root of 125042889 is about 500.0571787943.

The spelling of 125042889 in words is "one hundred twenty-five million, forty-two thousand, eight hundred eighty-nine".