8387970925 has 6 divisors (see below), whose sum is σ = 10401083978. Its totient is φ = 6710376720.

The previous prime is 8387970923. The next prime is 8387971063. The reversal of 8387970925 is 5290797838.

It can be written as a sum of positive squares in 3 ways, for example, as 244171876 + 8143799049 = 15626^2 + 90243^2 .

It is not a de Polignac number, because 8387970925 - 2¹ = 8387970923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8387970925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8387970923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167759394 + ... + 167759443.

Almost surely, 2^8387970925 is an apocalyptic number.

It is an amenable number.

8387970925 is a deficient number, since it is larger than the sum of its proper divisors (2013113053).

8387970925 is a wasteful number, since it uses less digits than its factorization.

8387970925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335518847 (or 335518842 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 58.

The square root of 8387970925 is about 91585.8664041565. The cubic root of 8387970925 is about 2031.8219081685.

The spelling of 8387970925 in words is "eight billion, three hundred eighty-seven million, nine hundred seventy thousand, nine hundred twenty-five".