3109806925 has 6 divisors (see below), whose sum is σ = 3856160618. Its totient is φ = 2487845520.

The previous prime is 3109806871. The next prime is 3109806961. The reversal of 3109806925 is 5296089013.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 702727081 + 2407079844 = 26509^2 + 49062^2 .

It is not a de Polignac number, because 3109806925 - 2¹¹ = 3109804877 is a prime.

It is a super-2 number, since 2×3109806925² = 19341798221555911250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 62196114 + ... + 62196163.

Almost surely, 2^3109806925 is an apocalyptic number.

It is an amenable number.

3109806925 is a deficient number, since it is larger than the sum of its proper divisors (746353693).

3109806925 is a wasteful number, since it uses less digits than its factorization.

3109806925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124392287 (or 124392282 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 3109806925 is about 55765.6428726505. The cubic root of 3109806925 is about 1459.6356952123.

The spelling of 3109806925 in words is "three billion, one hundred nine million, eight hundred six thousand, nine hundred twenty-five".