27225631 has 2 divisors, whose sum is σ = 27225632. Its totient is φ = 27225630.

The previous prime is 27225607. The next prime is 27225637. The reversal of 27225631 is 13652272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27225631 - 2¹⁵ = 27192863 is a prime.

It is a super-2 number, since 2×27225631² = 1482469966696322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27225631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27225637) 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 as a sum of consecutive naturals, namely, 13612815 + 13612816.

It is an arithmetic number, because the mean of its divisors is an integer number (13612816).

Almost surely, 2^27225631 is an apocalyptic number.

27225631 is a deficient number, since it is larger than the sum of its proper divisors (1).

27225631 is an equidigital number, since it uses as much as digits as its factorization.

27225631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 27225631 is about 5217.8186055094. The cubic root of 27225631 is about 300.8333533011.

The spelling of 27225631 in words is "twenty-seven million, two hundred twenty-five thousand, six hundred thirty-one".