125579 has 8 divisors (see below), whose sum is σ = 136080. Its totient is φ = 115456.

The previous prime is 125551. The next prime is 125591. The reversal of 125579 is 975521.

125579 = T₂ + T₃ + ... + T₉₀.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125579 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁶ + 5² + 5⁴ + 7³ + 9⁵ .

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (125509) 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, 1367 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2¹²⁵⁵⁷⁹ is an apocalyptic number.

125579 is a deficient number, since it is larger than the sum of its proper divisors (10501).

125579 is an equidigital number, since it uses as much as digits as its factorization.

125579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189.

The product of its digits is 3150, while the sum is 29.

The square root of 125579 is about 354.3712742309. The cubic root of 125579 is about 50.0770811090.

The spelling of 125579 in words is "one hundred twenty-five thousand, five hundred seventy-nine".