27775525331 has 2 divisors, whose sum is σ = 27775525332. Its totient is φ = 27775525330.

The previous prime is 27775525291. The next prime is 27775525333. The reversal of 27775525331 is 13352557772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27775525331 is a prime.

It is a super-2 number, since 2×27775525331² (a number of 22 digits) contains 22 as substring.

Together with 27775525333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27775525333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887762665 + 13887762666.

It is an arithmetic number, because the mean of its divisors is an integer number (13887762666).

Almost surely, 2^27775525331 is an apocalyptic number.

27775525331 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775525331 is an equidigital number, since it uses as much as digits as its factorization.

27775525331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1543500, while the sum is 47.

The spelling of 27775525331 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred twenty-five thousand, three hundred thirty-one".