27725520131 has 4 divisors (see below), whose sum is σ = 28930977552. Its totient is φ = 26520062712.

The previous prime is 27725520073. The next prime is 27725520161. The reversal of 27725520131 is 13102552772.

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 27725520131 - 2²⁶ = 27658411267 is a prime.

It is a super-2 number, since 2×27725520131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27725520091 and 27725520100.

It is not an unprimeable number, because it can be changed into a prime (27725520161) 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 3 ways as a sum of consecutive naturals, for example, 602728676 + ... + 602728721.

It is an arithmetic number, because the mean of its divisors is an integer number (7232744388).

Almost surely, 2^27725520131 is an apocalyptic number.

27725520131 is a deficient number, since it is larger than the sum of its proper divisors (1205457421).

27725520131 is a wasteful number, since it uses less digits than its factorization.

27725520131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205457420.

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 27725520131 in words is "twenty-seven billion, seven hundred twenty-five million, five hundred twenty thousand, one hundred thirty-one".