28225943 has 2 divisors, whose sum is σ = 28225944. Its totient is φ = 28225942.

The previous prime is 28225937. The next prime is 28225957. The reversal of 28225943 is 34952282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28225943 - 2⁴ = 28225927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28225913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14112971 + 14112972.

It is an arithmetic number, because the mean of its divisors is an integer number (14112972).

Almost surely, 2^28225943 is an apocalyptic number.

28225943 is a deficient number, since it is larger than the sum of its proper divisors (1).

28225943 is an equidigital number, since it uses as much as digits as its factorization.

28225943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 28225943 is about 5312.8093321707. The cubic root of 28225943 is about 304.4734909871.

The spelling of 28225943 in words is "twenty-eight million, two hundred twenty-five thousand, nine hundred forty-three".