28225349 has 2 divisors, whose sum is σ = 28225350. Its totient is φ = 28225348.

The previous prime is 28225331. The next prime is 28225367. The reversal of 28225349 is 94352282.

It is a balanced prime because it is at equal distance from previous prime (28225331) and next prime (28225367).

It can be written as a sum of positive squares in only one way, i.e., 25180324 + 3045025 = 5018^2 + 1745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28225349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28225319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14112674 + 14112675.

It is an arithmetic number, because the mean of its divisors is an integer number (14112675).

Almost surely, 2^28225349 is an apocalyptic number.

It is an amenable number.

28225349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28225349 is an equidigital number, since it uses as much as digits as its factorization.

28225349 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 28225349 is about 5312.7534292493. The cubic root of 28225349 is about 304.4713551444.

The spelling of 28225349 in words is "twenty-eight million, two hundred twenty-five thousand, three hundred forty-nine".