8978571925 has 6 divisors (see below), whose sum is σ = 11133429218. Its totient is φ = 7182857520.

The previous prime is 8978571887. The next prime is 8978571929. The reversal of 8978571925 is 5291758798.

It can be written as a sum of positive squares in 3 ways, for example, as 8398404 + 8970173521 = 2898^2 + 94711^2 .

It is not a de Polignac number, because 8978571925 - 2¹¹ = 8978569877 is a prime.

It is a super-2 number, since 2×8978571925² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8978571929) 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, 179571414 + ... + 179571463.

Almost surely, 2^8978571925 is an apocalyptic number.

It is an amenable number.

8978571925 is a deficient number, since it is larger than the sum of its proper divisors (2154857293).

8978571925 is a wasteful number, since it uses less digits than its factorization.

8978571925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359142887 (or 359142882 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 61.

The square root of 8978571925 is about 94755.3266312770. The cubic root of 8978571925 is about 2078.4316892383.

The spelling of 8978571925 in words is "eight billion, nine hundred seventy-eight million, five hundred seventy-one thousand, nine hundred twenty-five".