125089 has 4 divisors (see below), whose sum is σ = 127024. Its totient is φ = 123156.
The previous prime is 125063. The next prime is 125093. The reversal of 125089 is 980521.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980521 = 59 ⋅16619.
It is a cyclic number.
It is not a de Polignac number, because 125089 - 29 = 124577 is a prime.
It is a Duffinian number.
125089 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (125029) 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, 867 + ... + 1000.
It is an arithmetic number, because the mean of its divisors is an integer number (31756).
125089 is a Friedman number, since it can be written as 89+50^(2+1), using all its digits and the basic arithmetic operations.
2125089 is an apocalyptic number.
It is an amenable number.
125089 is a deficient number, since it is larger than the sum of its proper divisors (1935).
125089 is an equidigital number, since it uses as much as digits as its factorization.
125089 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1934.
The product of its (nonzero) digits is 720, while the sum is 25.
The square root of 125089 is about 353.6792332043. The cubic root of 125089 is about 50.0118638514.
The spelling of 125089 in words is "one hundred twenty-five thousand, eighty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.256 sec. • engine limits •