125015255242 has 4 divisors (see below), whose sum is σ = 187522882866. Its totient is φ = 62507627620.

The previous prime is 125015255191. The next prime is 125015255243. The reversal of 125015255242 is 242552510521.

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

It can be written as a sum of positive squares in only one way, i.e., 124982753841 + 32501401 = 353529^2 + 5701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125015255198 and 125015255207.

It is not an unprimeable number, because it can be changed into a prime (125015255243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31253813809 + ... + 31253813812.

Almost surely, 2^125015255242 is an apocalyptic number.

125015255242 is a deficient number, since it is larger than the sum of its proper divisors (62507627624).

125015255242 is an equidigital number, since it uses as much as digits as its factorization.

125015255242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62507627623.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 125015255242 its reverse (242552510521), we get a palindrome (367567765763).

The spelling of 125015255242 in words is "one hundred twenty-five billion, fifteen million, two hundred fifty-five thousand, two hundred forty-two".