8971388425 has 6 divisors (see below), whose sum is σ = 11124521678. Its totient is φ = 7177110720.

The previous prime is 8971388407. The next prime is 8971388431. The reversal of 8971388425 is 5248831798.

It can be written as a sum of positive squares in 3 ways, for example, as 588887289 + 8382501136 = 24267^2 + 91556^2 .

It is not a de Polignac number, because 8971388425 - 2⁷ = 8971388297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179427744 + ... + 179427793.

Almost surely, 2^8971388425 is an apocalyptic number.

It is an amenable number.

8971388425 is a deficient number, since it is larger than the sum of its proper divisors (2153133253).

8971388425 is a wasteful number, since it uses less digits than its factorization.

8971388425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358855547 (or 358855542 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The square root of 8971388425 is about 94717.4135257081. The cubic root of 8971388425 is about 2077.8772433221.

The spelling of 8971388425 in words is "eight billion, nine hundred seventy-one million, three hundred eighty-eight thousand, four hundred twenty-five".