125985558 has 16 divisors (see below), whose sum is σ = 256725936. Its totient is φ = 41202720.

The previous prime is 125985553. The next prime is 125985577. The reversal of 125985558 is 855589521.

It is a super-3 number, since 3×125985558³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125985553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197773 + ... + 198408.

It is an arithmetic number, because the mean of its divisors is an integer number (16045371).

Almost surely, 2^125985558 is an apocalyptic number.

125985558 is an abundant number, since it is smaller than the sum of its proper divisors (130740378).

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

125985558 is a wasteful number, since it uses less digits than its factorization.

125985558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396239.

The product of its digits is 720000, while the sum is 48.

The square root of 125985558 is about 11224.3288440779. The cubic root of 125985558 is about 501.3106387835.

The spelling of 125985558 in words is "one hundred twenty-five million, nine hundred eighty-five thousand, five hundred fifty-eight".