125881 has 8 divisors (see below), whose sum is σ = 147200. Its totient is φ = 107604.

The previous prime is 125863. The next prime is 125887. The reversal of 125881 is 188521.

It is not a de Polignac number, because 125881 - 2⁷ = 125753 is a prime.

It is a super-2 number, since 2×125881² = 31692052322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125887) 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, 160 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (18400).

2¹²⁵⁸⁸¹ is an apocalyptic number.

It is an amenable number.

125881 is a deficient number, since it is larger than the sum of its proper divisors (21319).

125881 is an frugal number, since it uses more digits than its factorization.

125881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 374 counting only the distinct ones).

The product of its digits is 640, while the sum is 25.

The square root of 125881 is about 354.7971251293. The cubic root of 125881 is about 50.1171917738.

The spelling of 125881 in words is "one hundred twenty-five thousand, eight hundred eighty-one".