6725972891 has 8 divisors (see below), whose sum is σ = 7410073968. Its totient is φ = 6053980000.

The previous prime is 6725972873. The next prime is 6725972899. The reversal of 6725972891 is 1982795276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6725972891 - 2²⁶ = 6658864027 is a prime.

It is a super-2 number, since 2×6725972891² = 90477422660933795762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6725972899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3025880 + ... + 3028101.

It is an arithmetic number, because the mean of its divisors is an integer number (926259246).

Almost surely, 2^6725972891 is an apocalyptic number.

6725972891 is a deficient number, since it is larger than the sum of its proper divisors (684101077).

6725972891 is a wasteful number, since it uses less digits than its factorization.

6725972891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054093.

The product of its digits is 3810240, while the sum is 56.

The square root of 6725972891 is about 82012.0289408816. The cubic root of 6725972891 is about 1887.6365192603.

The spelling of 6725972891 in words is "six billion, seven hundred twenty-five million, nine hundred seventy-two thousand, eight hundred ninety-one".