72082125181 has 4 divisors (see below), whose sum is σ = 78635045664. Its totient is φ = 65529204700.

The previous prime is 72082125151. The next prime is 72082125211. The reversal of 72082125181 is 18152128027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (72082125151) and next prime (72082125211).

It is a cyclic number.

It is not a de Polignac number, because 72082125181 - 2⁷ = 72082125053 is a prime.

It is a super-2 number, since 2×72082125181² (a number of 23 digits) 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 72082125181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72082125151) 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, 3276460225 + ... + 3276460246.

It is an arithmetic number, because the mean of its divisors is an integer number (19658761416).

Almost surely, 2^72082125181 is an apocalyptic number.

It is an amenable number.

72082125181 is a deficient number, since it is larger than the sum of its proper divisors (6552920483).

72082125181 is a wasteful number, since it uses less digits than its factorization.

72082125181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552920482.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 72082125181 in words is "seventy-two billion, eighty-two million, one hundred twenty-five thousand, one hundred eighty-one".