6825899161 has 3 divisors (see below), whose sum is σ = 6825981781. Its totient is φ = 6825816542.

The previous prime is 6825899147. The next prime is 6825899191. The reversal of 6825899161 is 1619985286.

The square root of 6825899161 is 82619.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6825899161 - 2¹³ = 6825890969 is a prime.

It is a super-3 number, since 3×6825899161³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6825899191) 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 2 ways as a sum of consecutive naturals, for example, 41310 + ... + 123928.

Almost surely, 2^6825899161 is an apocalyptic number.

6825899161 is the 82619-th square number.

6825899161 is the 41310-th centered octagonal number.

It is an amenable number.

6825899161 is a deficient number, since it is larger than the sum of its proper divisors (82620).

6825899161 is an frugal number, since it uses more digits than its factorization.

6825899161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165238 (or 82619 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 55.

The cubic root of 6825899161 is about 1896.9386676530.

The spelling of 6825899161 in words is "six billion, eight hundred twenty-five million, eight hundred ninety-nine thousand, one hundred sixty-one".