8669697469225 has 81 divisors (see below), whose sum is σ = 11787480796527. Its totient is φ = 6322667719680.

The previous prime is 8669697469217. The next prime is 8669697469243. The reversal of 8669697469225 is 5229647969668.

The square root of 8669697469225 is 2944435.

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

It can be written as a sum of positive squares in 13 ways, for example, as 8321257546281 + 348439922944 = 2884659^2 + 590288^2 .

It is not a de Polignac number, because 8669697469225 - 2³ = 8669697469217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 80 ways as a sum of consecutive naturals, for example, 18564662442 + ... + 18564662908.

Almost surely, 2^{8669697469225} is an apocalyptic number.

8669697469225 is the 2944435-th square number.

8669697469225 is the 1472218-th centered octagonal number.

It is an amenable number.

8669697469225 is a deficient number, since it is larger than the sum of its proper divisors (3117783327302).

8669697469225 is an frugal number, since it uses more digits than its factorization.

8669697469225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 582 counting only the distinct ones).

The product of its digits is 4232632320, while the sum is 79.

The spelling of 8669697469225 in words is "eight trillion, six hundred sixty-nine billion, six hundred ninety-seven million, four hundred sixty-nine thousand, two hundred twenty-five".