125111530 has 16 divisors (see below), whose sum is σ = 225330984. Its totient is φ = 50015680.

The previous prime is 125111507. The next prime is 125111531. The reversal of 125111530 is 35111521.

It can be written as a sum of positive squares in 4 ways, for example, as 106440489 + 18671041 = 10317^2 + 4321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125111498 and 125111507.

It is not an unprimeable number, because it can be changed into a prime (125111531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26424 + ... + 30796.

Almost surely, 2^125111530 is an apocalyptic number.

125111530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125111530 is a deficient number, since it is larger than the sum of its proper divisors (100219454).

125111530 is a wasteful number, since it uses less digits than its factorization.

125111530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 125111530 is about 11185.3265486529. The cubic root of 125111530 is about 500.1486624612.

Subtracting from 125111530 its reverse (35111521), we obtain a palindrome (90000009).

It can be divided in two parts, 12511 and 1530, that added together give a palindrome (14041).

The spelling of 125111530 in words is "one hundred twenty-five million, one hundred eleven thousand, five hundred thirty".