6725918831 has 4 divisors (see below), whose sum is σ = 6882335592. Its totient is φ = 6569502072.

The previous prime is 6725918809. The next prime is 6725918863. The reversal of 6725918831 is 1388195276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6725918831 - 2⁶ = 6725918767 is a prime.

It is a super-2 number, since 2×6725918831² = 90475968242400813122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6725918831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6725918891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78208316 + ... + 78208401.

It is an arithmetic number, because the mean of its divisors is an integer number (1720583898).

Almost surely, 2^6725918831 is an apocalyptic number.

6725918831 is a deficient number, since it is larger than the sum of its proper divisors (156416761).

6725918831 is a wasteful number, since it uses less digits than its factorization.

6725918831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156416760.

The product of its digits is 725760, while the sum is 50.

The square root of 6725918831 is about 82011.6993544214. The cubic root of 6725918831 is about 1887.6314619545.

The spelling of 6725918831 in words is "six billion, seven hundred twenty-five million, nine hundred eighteen thousand, eight hundred thirty-one".