125015125 has 8 divisors (see below), whose sum is σ = 156019032. Its totient is φ = 100012000.

The previous prime is 125015113. The next prime is 125015129. The reversal of 125015125 is 521510521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3530641 + 121484484 = 1879^2 + 11022^2 .

It is not a de Polignac number, because 125015125 - 2⁷ = 125014997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125015096 and 125015105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125015129) 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, 499936 + ... + 500185.

It is an arithmetic number, because the mean of its divisors is an integer number (19502379).

Almost surely, 2^125015125 is an apocalyptic number.

It is an amenable number.

125015125 is a deficient number, since it is larger than the sum of its proper divisors (31003907).

125015125 is an equidigital number, since it uses as much as digits as its factorization.

125015125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000136 (or 1000126 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 125015125 is about 11181.0162776020. The cubic root of 125015125 is about 500.0201658533.

Adding to 125015125 its reverse (521510521), we get a palindrome (646525646).

The spelling of 125015125 in words is "one hundred twenty-five million, fifteen thousand, one hundred twenty-five".