125185128 has 32 divisors (see below), whose sum is σ = 313620000. Its totient is φ = 41640768.

The previous prime is 125185117. The next prime is 125185139. The reversal of 125185128 is 821581521.

It is an interprime number because it is at equal distance from previous prime (125185117) and next prime (125185139).

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, 6750 + ... + 17202.

It is an arithmetic number, because the mean of its divisors is an integer number (9800625).

Almost surely, 2^125185128 is an apocalyptic number.

It is an amenable number.

125185128 is an abundant number, since it is smaller than the sum of its proper divisors (188434872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125185128 is a wasteful number, since it uses less digits than its factorization.

125185128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10961 (or 10957 counting only the distinct ones).

The product of its digits is 6400, while the sum is 33.

The square root of 125185128 is about 11188.6160002031. The cubic root of 125185128 is about 500.2467155762.

The spelling of 125185128 in words is "one hundred twenty-five million, one hundred eighty-five thousand, one hundred twenty-eight".