125550503205 has 16 divisors (see below), whose sum is σ = 200919583104. Its totient is φ = 66947342400.

The previous prime is 125550503201. The next prime is 125550503219. The reversal of 125550503205 is 502305055521.

It is not a de Polignac number, because 125550503205 - 2² = 125550503201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125550503201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727321 + ... + 883230.

It is an arithmetic number, because the mean of its divisors is an integer number (12557473944).

Almost surely, 2^125550503205 is an apocalyptic number.

125550503205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125550503205 is a deficient number, since it is larger than the sum of its proper divisors (75369079899).

125550503205 is a wasteful number, since it uses less digits than its factorization.

125550503205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615756.

The product of its (nonzero) digits is 37500, while the sum is 33.

Adding to 125550503205 its reverse (502305055521), we get a palindrome (627855558726).

The spelling of 125550503205 in words is "one hundred twenty-five billion, five hundred fifty million, five hundred three thousand, two hundred five".