8538684025 has 9 divisors (see below), whose sum is σ = 10588541133. Its totient is φ = 6830577600.

The previous prime is 8538683987. The next prime is 8538684029. The reversal of 8538684025 is 5204868358.

The square root of 8538684025 is 92405.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1341537129 + 7197146896 = 36627^2 + 84836^2 .

It is not a de Polignac number, because 8538684025 - 2⁷ = 8538683897 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 8538684025.

It is not an unprimeable number, because it can be changed into a prime (8538684029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 452785 + ... + 471265.

Almost surely, 2^8538684025 is an apocalyptic number.

8538684025 is the 92405-th square number.

8538684025 is the 46203-rd centered octagonal number.

It is an amenable number.

8538684025 is a deficient number, since it is larger than the sum of its proper divisors (2049857108).

8538684025 is an frugal number, since it uses more digits than its factorization.

8538684025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36972 (or 18486 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The cubic root of 8538684025 is about 2043.9188435480.

Multiplying 8538684025 by its sum of digits (49), we get a square (418395517225 = 646835²).

The spelling of 8538684025 in words is "eight billion, five hundred thirty-eight million, six hundred eighty-four thousand, twenty-five".