3912915625 has 24 divisors (see below), whose sum is σ = 5059598040. Its totient is φ = 3022320000.

The previous prime is 3912915623. The next prime is 3912915637. The reversal of 3912915625 is 5265192193.

It can be written as a sum of positive squares in 12 ways, for example, as 3870457369 + 42458256 = 62213^2 + 6516^2 .

It is not a de Polignac number, because 3912915625 - 2¹ = 3912915623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3912915623) 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 23 ways as a sum of consecutive naturals, for example, 69037 + ... + 112213.

It is an arithmetic number, because the mean of its divisors is an integer number (210816585).

Almost surely, 2^3912915625 is an apocalyptic number.

It is an amenable number.

3912915625 is a deficient number, since it is larger than the sum of its proper divisors (1146682415).

3912915625 is an frugal number, since it uses more digits than its factorization.

3912915625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43231 (or 43211 counting only the distinct ones).

The product of its digits is 145800, while the sum is 43.

The square root of 3912915625 is about 62553.3022709433. The cubic root of 3912915625 is about 1575.7966071843.

The spelling of 3912915625 in words is "three billion, nine hundred twelve million, nine hundred fifteen thousand, six hundred twenty-five".