108020682225 has 27 divisors (see below), whose sum is σ = 193485874699. Its totient is φ = 57608401200.

The previous prime is 108020682191. The next prime is 108020682241. The reversal of 108020682225 is 522286020801.

The square root of 108020682225 is 328665.

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

It can be written as a sum of positive squares in only one way, i.e., 38887445601 + 69133236624 = 197199^2 + 262932^2 .

It is not a de Polignac number, because 108020682225 - 2⁷ = 108020682097 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 108020682225.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4919020 + ... + 4940930.

Almost surely, 2^108020682225 is an apocalyptic number.

108020682225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

108020682225 is the 328665-th square number.

108020682225 is the 164333-rd centered octagonal number.

It is an amenable number.

108020682225 is a deficient number, since it is larger than the sum of its proper divisors (85465192474).

108020682225 is an frugal number, since it uses more digits than its factorization.

108020682225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43838 (or 21919 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Multiplying 108020682225 by its sum of digits (36), we get a square (3888744560100 = 1971990²).

The spelling of 108020682225 in words is "one hundred eight billion, twenty million, six hundred eighty-two thousand, two hundred twenty-five".