125013205 has 4 divisors (see below), whose sum is σ = 150015852. Its totient is φ = 100010560.

The previous prime is 125013199. The next prime is 125013209. The reversal of 125013205 is 502310521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13351716 + 111661489 = 3654^2 + 10567^2 .

It is not a de Polignac number, because 125013205 - 2³ = 125013197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125013209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12501316 + ... + 12501325.

It is an arithmetic number, because the mean of its divisors is an integer number (37503963).

Almost surely, 2^125013205 is an apocalyptic number.

It is an amenable number.

125013205 is a deficient number, since it is larger than the sum of its proper divisors (25002647).

125013205 is an equidigital number, since it uses as much as digits as its factorization.

125013205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25002646.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 125013205 is about 11180.9304174563. The cubic root of 125013205 is about 500.0176060467.

Adding to 125013205 its reverse (502310521), we get a palindrome (627323726).

The spelling of 125013205 in words is "one hundred twenty-five million, thirteen thousand, two hundred five".