125858 has 4 divisors (see below), whose sum is σ = 188790. Its totient is φ = 62928.

The previous prime is 125821. The next prime is 125863. The reversal of 125858 is 858521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 97969 + 27889 = 313^2 + 167^2 .

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 125858.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31463 + ... + 31466.

2¹²⁵⁸⁵⁸ is an apocalyptic number.

125858 is a deficient number, since it is larger than the sum of its proper divisors (62932).

125858 is an equidigital number, since it uses as much as digits as its factorization.

125858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62931.

The product of its digits is 3200, while the sum is 29.

The square root of 125858 is about 354.7647107591. The cubic root of 125858 is about 50.1141392464.

The spelling of 125858 in words is "one hundred twenty-five thousand, eight hundred fifty-eight".