27625931 has 2 divisors, whose sum is σ = 27625932. Its totient is φ = 27625930.

The previous prime is 27625919. The next prime is 27625933. The reversal of 27625931 is 13952672.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27625931 is a prime.

It is a super-2 number, since 2×27625931² = 1526384127233522, which contains 22 as substring.

Together with 27625933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27625891 and 27625900.

It is not a weakly prime, because it can be changed into another prime (27625933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13812965 + 13812966.

It is an arithmetic number, because the mean of its divisors is an integer number (13812966).

Almost surely, 2^27625931 is an apocalyptic number.

27625931 is a deficient number, since it is larger than the sum of its proper divisors (1).

27625931 is an equidigital number, since it uses as much as digits as its factorization.

27625931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 27625931 is about 5256.0375759692. The cubic root of 27625931 is about 302.3005757042.

The spelling of 27625931 in words is "twenty-seven million, six hundred twenty-five thousand, nine hundred thirty-one".