125123205 has 16 divisors (see below), whose sum is σ = 201971520. Its totient is φ = 66140928.

The previous prime is 125123203. The next prime is 125123239. The reversal of 125123205 is 502321521.

It is not a de Polignac number, because 125123205 - 2¹ = 125123203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125123203) 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, 35215 + ... + 38604.

It is an arithmetic number, because the mean of its divisors is an integer number (12623220).

Almost surely, 2^125123205 is an apocalyptic number.

125123205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125123205 is a deficient number, since it is larger than the sum of its proper divisors (76848315).

125123205 is a wasteful number, since it uses less digits than its factorization.

125123205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73940.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 125123205 is about 11185.8484255777. The cubic root of 125123205 is about 500.1642193914.

Adding to 125123205 its reverse (502321521), we get a palindrome (627444726).

The spelling of 125123205 in words is "one hundred twenty-five million, one hundred twenty-three thousand, two hundred five".