8225431 has 2 divisors, whose sum is σ = 8225432. Its totient is φ = 8225430.

The previous prime is 8225429. The next prime is 8225471. The reversal of 8225431 is 1345228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8225431 - 2¹ = 8225429 is a prime.

It is a super-2 number, since 2×8225431² = 135315430271522, which contains 22 as substring.

Together with 8225429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8225396 and 8225405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8225471) 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, 4112715 + 4112716.

It is an arithmetic number, because the mean of its divisors is an integer number (4112716).

Almost surely, 2^8225431 is an apocalyptic number.

8225431 is a deficient number, since it is larger than the sum of its proper divisors (1).

8225431 is an equidigital number, since it uses as much as digits as its factorization.

8225431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 8225431 is about 2868.0012203624. The cubic root of 8225431 is about 201.8612172885.

The spelling of 8225431 in words is "eight million, two hundred twenty-five thousand, four hundred thirty-one".