125012 has 6 divisors (see below), whose sum is σ = 218778. Its totient is φ = 62504.

The previous prime is 125003. The next prime is 125017. The reversal of 125012 is 210521.

It can be written as a sum of positive squares in only one way, i.e., 111556 + 13456 = 334^2 + 116^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 124984 and 125002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15623 + ... + 15630.

It is an arithmetic number, because the mean of its divisors is an integer number (36463).

125012 is a Friedman number, since it can be written as 50^(2+1)+12, using all its digits and the basic arithmetic operations.

2¹²⁵⁰¹² is an apocalyptic number.

It is an amenable number.

125012 is a deficient number, since it is larger than the sum of its proper divisors (93766).

125012 is a wasteful number, since it uses less digits than its factorization.

125012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31257 (or 31255 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 125012 is about 353.5703607487. The cubic root of 125012 is about 50.0015999488.

Adding to 125012 its reverse (210521), we get a palindrome (335533).

The spelling of 125012 in words is "one hundred twenty-five thousand, twelve".