6854125221 has 6 divisors (see below), whose sum is σ = 9900403110. Its totient is φ = 4569416808.

The previous prime is 6854125193. The next prime is 6854125261. The reversal of 6854125221 is 1225214586.

6854125221 is a `hidden beast` number, since 68 + 541 + 2 + 52 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6482021121 + 372104100 = 80511^2 + 19290^2 .

It is not a de Polignac number, because 6854125221 - 2⁹ = 6854124709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6854125261) 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, 380784726 + ... + 380784743.

It is an arithmetic number, because the mean of its divisors is an integer number (1650067185).

Almost surely, 2^6854125221 is an apocalyptic number.

It is an amenable number.

6854125221 is a deficient number, since it is larger than the sum of its proper divisors (3046277889).

6854125221 is a wasteful number, since it uses less digits than its factorization.

6854125221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761569475 (or 761569472 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 6854125221 is about 82789.6444067735. The cubic root of 6854125221 is about 1899.5497752251.

The spelling of 6854125221 in words is "six billion, eight hundred fifty-four million, one hundred twenty-five thousand, two hundred twenty-one".