125858189 has 4 divisors (see below), whose sum is σ = 127921500. Its totient is φ = 123794880.

The previous prime is 125858167. The next prime is 125858197. The reversal of 125858189 is 981858521.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9972964 + 115885225 = 3158^2 + 10765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125858189 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125858149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031564 + ... + 1031685.

It is an arithmetic number, because the mean of its divisors is an integer number (31980375).

Almost surely, 2^125858189 is an apocalyptic number.

It is an amenable number.

125858189 is a deficient number, since it is larger than the sum of its proper divisors (2063311).

125858189 is an equidigital number, since it uses as much as digits as its factorization.

125858189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063310.

The product of its digits is 230400, while the sum is 47.

The square root of 125858189 is about 11218.6536179704. The cubic root of 125858189 is about 501.1416433171.

The spelling of 125858189 in words is "one hundred twenty-five million, eight hundred fifty-eight thousand, one hundred eighty-nine".