8551852166025 has 81 divisors (see below), whose sum is σ = 17818743743463. Its totient is φ = 3909277764000.

The previous prime is 8551852166023. The next prime is 8551852166041. The reversal of 8551852166025 is 5206612581558.

It is a happy number.

The square root of 8551852166025 is 2924355.

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

8551852166025 is a `hidden beast` number, since 8 + 5 + 5 + 1 + 8 + 5 + 21 + 6 + 602 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3078666779769 + 5473185386256 = 1754613^2 + 2339484^2 .

It is not a de Polignac number, because 8551852166025 - 2¹ = 8551852166023 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8551852166023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 307043350 + ... + 307071200.

Almost surely, 2^{8551852166025} is an apocalyptic number.

8551852166025 is the 2924355-th square number.

8551852166025 is the 1462178-th centered octagonal number.

It is an amenable number.

8551852166025 is an abundant number, since it is smaller than the sum of its proper divisors (9266891577438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8551852166025 is an frugal number, since it uses more digits than its factorization.

8551852166025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55732 (or 27866 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 54.

The spelling of 8551852166025 in words is "eight trillion, five hundred fifty-one billion, eight hundred fifty-two million, one hundred sixty-six thousand, twenty-five".