27725113631 has 2 divisors, whose sum is σ = 27725113632. Its totient is φ = 27725113630.

The previous prime is 27725113597. The next prime is 27725113643. The reversal of 27725113631 is 13631152772.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27725113631 - 2¹⁴ = 27725097247 is a prime.

It is a super-2 number, since 2×27725113631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27725113231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13862556815 + 13862556816.

It is an arithmetic number, because the mean of its divisors is an integer number (13862556816).

Almost surely, 2^27725113631 is an apocalyptic number.

27725113631 is a deficient number, since it is larger than the sum of its proper divisors (1).

27725113631 is an equidigital number, since it uses as much as digits as its factorization.

27725113631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The spelling of 27725113631 in words is "twenty-seven billion, seven hundred twenty-five million, one hundred thirteen thousand, six hundred thirty-one".