125405512 has 16 divisors (see below), whose sum is σ = 243243900. Its totient is φ = 60540480.

The previous prime is 125405437. The next prime is 125405513. The reversal of 125405512 is 215504521.

It can be written as a sum of positive squares in 2 ways, for example, as 123076836 + 2328676 = 11094^2 + 1526^2 .

It is not an unprimeable number, because it can be changed into a prime (125405513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270039 + ... + 270502.

Almost surely, 2^125405512 is an apocalyptic number.

It is an amenable number.

125405512 is a deficient number, since it is larger than the sum of its proper divisors (117838388).

125405512 is a wasteful number, since it uses less digits than its factorization.

125405512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540576 (or 540572 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 125405512 is about 11198.4602513024. The cubic root of 125405512 is about 500.5400990426.

Subtracting 125405512 from its reverse (215504521), we obtain a palindrome (90099009).

The spelling of 125405512 in words is "one hundred twenty-five million, four hundred five thousand, five hundred twelve".