125558 has 8 divisors (see below), whose sum is σ = 191352. Its totient is φ = 61776.

The previous prime is 125551. The next prime is 125591. The reversal of 125558 is 855521.

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

It is a super-3 number, since 3×125558³ = 5938194555723336, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125551) by changing a digit.

125558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 335 + ... + 602.

It is an arithmetic number, because the mean of its divisors is an integer number (23919).

2¹²⁵⁵⁵⁸ is an apocalyptic number.

125558 is a deficient number, since it is larger than the sum of its proper divisors (65794).

125558 is an equidigital number, since it uses as much as digits as its factorization.

125558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

The product of its digits is 2000, while the sum is 26.

The square root of 125558 is about 354.3416430509. The cubic root of 125558 is about 50.0742895665.

The spelling of 125558 in words is "one hundred twenty-five thousand, five hundred fifty-eight".