125524339209 has 12 divisors (see below), whose sum is σ = 185735201652. Its totient is φ = 81641846400.

The previous prime is 125524339153. The next prime is 125524339229. The reversal of 125524339209 is 902933425521.

125524339209 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 2 + 433 + 9 + 209 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 44169327225 + 81355011984 = 210165^2 + 285228^2 .

It is not a de Polignac number, because 125524339209 - 2⁷ = 125524339081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125524339229) 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 11 ways as a sum of consecutive naturals, for example, 170086812 + ... + 170087549.

It is an arithmetic number, because the mean of its divisors is an integer number (15477933471).

Almost surely, 2^125524339209 is an apocalyptic number.

It is an amenable number.

125524339209 is a deficient number, since it is larger than the sum of its proper divisors (60210862443).

125524339209 is a wasteful number, since it uses less digits than its factorization.

125524339209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340174408 (or 340174405 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 125524339209 in words is "one hundred twenty-five billion, five hundred twenty-four million, three hundred thirty-nine thousand, two hundred nine".