6825075381 has 6 divisors (see below), whose sum is σ = 9858442230. Its totient is φ = 4550050248.

The previous prime is 6825075349. The next prime is 6825075401. The reversal of 6825075381 is 1835705286.

6825075381 is a `hidden beast` number, since 68 + 2 + 50 + 7 + 538 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6767694756 + 57380625 = 82266^2 + 7575^2 .

It is not a de Polignac number, because 6825075381 - 2⁵ = 6825075349 is a prime.

It is a super-2 number, since 2×6825075381² = 93163307912664590322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6825075311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 379170846 + ... + 379170863.

It is an arithmetic number, because the mean of its divisors is an integer number (1643073705).

Almost surely, 2^6825075381 is an apocalyptic number.

It is an amenable number.

6825075381 is a deficient number, since it is larger than the sum of its proper divisors (3033366849).

6825075381 is a wasteful number, since it uses less digits than its factorization.

6825075381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758341715 (or 758341712 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 6825075381 is about 82614.0144345982. The cubic root of 6825075381 is about 1896.8623542392.

The spelling of 6825075381 in words is "six billion, eight hundred twenty-five million, seventy-five thousand, three hundred eighty-one".