125615 has 16 divisors (see below), whose sum is σ = 178752. Its totient is φ = 82944.

The previous prime is 125597. The next prime is 125617. The reversal of 125615 is 516521.

125615 is nontrivially palindromic in base 2.

It is a cyclic number.

It is not a de Polignac number, because 125615 - 2⁶ = 125551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1247 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (11172).

2¹²⁵⁶¹⁵ is an apocalyptic number.

125615 is a deficient number, since it is larger than the sum of its proper divisors (53137).

125615 is an equidigital number, since it uses as much as digits as its factorization.

125615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146.

The product of its digits is 300, while the sum is 20.

The square root of 125615 is about 354.4220647759. The cubic root of 125615 is about 50.0818658864.

The spelling of 125615 in words is "one hundred twenty-five thousand, six hundred fifteen".