27225431 has 2 divisors, whose sum is σ = 27225432. Its totient is φ = 27225430.

The previous prime is 27225421. The next prime is 27225433. The reversal of 27225431 is 13452272.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27225431 is a prime.

It is a super-2 number, since 2×27225431² = 1482448186271522, which contains 22 as substring.

Together with 27225433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27225431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27225433) 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, 13612715 + 13612716.

It is an arithmetic number, because the mean of its divisors is an integer number (13612716).

Almost surely, 2^27225431 is an apocalyptic number.

27225431 is a deficient number, since it is larger than the sum of its proper divisors (1).

27225431 is an equidigital number, since it uses as much as digits as its factorization.

27225431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 26.

The square root of 27225431 is about 5217.7994403771. The cubic root of 27225431 is about 300.8326166568.

The spelling of 27225431 in words is "twenty-seven million, two hundred twenty-five thousand, four hundred thirty-one".