3125388605 has 16 divisors (see below), whose sum is σ = 3780943920. Its totient is φ = 2480076288.

The previous prime is 3125388601. The next prime is 3125388611. The reversal of 3125388605 is 5068835213.

It can be written as a sum of positive squares in 8 ways, for example, as 1320668281 + 1804720324 = 36341^2 + 42482^2 .

It is a cyclic number.

It is not a de Polignac number, because 3125388605 - 2² = 3125388601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125388601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308399 + ... + 318371.

It is an arithmetic number, because the mean of its divisors is an integer number (236308995).

Almost surely, 2^3125388605 is an apocalyptic number.

It is an amenable number.

3125388605 is a deficient number, since it is larger than the sum of its proper divisors (655555315).

3125388605 is a wasteful number, since it uses less digits than its factorization.

3125388605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 3125388605 is about 55905.1751182303. The cubic root of 3125388605 is about 1462.0694686166.

The spelling of 3125388605 in words is "three billion, one hundred twenty-five million, three hundred eighty-eight thousand, six hundred five".