6886510225 has 27 divisors (see below), whose sum is σ = 9937630971. Its totient is φ = 4720186800.

The previous prime is 6886510223. The next prime is 6886510231. The reversal of 6886510225 is 5220156886.

The square root of 6886510225 is 82985.

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., 2479143681 + 4407366544 = 49791^2 + 66388^2 .

It is not a de Polignac number, because 6886510225 - 2¹ = 6886510223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6886510223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2903290 + ... + 2905660.

Almost surely, 2^6886510225 is an apocalyptic number.

6886510225 is the 82985-th square number.

6886510225 is the 41493-rd centered octagonal number.

It is an amenable number.

6886510225 is a deficient number, since it is larger than the sum of its proper divisors (3051120746).

6886510225 is an frugal number, since it uses more digits than its factorization.

6886510225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The cubic root of 6886510225 is about 1902.5367984488.

The spelling of 6886510225 in words is "six billion, eight hundred eighty-six million, five hundred ten thousand, two hundred twenty-five".