28252394441 has 2 divisors, whose sum is σ = 28252394442. Its totient is φ = 28252394440.

The previous prime is 28252394381. The next prime is 28252394477. The reversal of 28252394441 is 14449325282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19872822841 + 8379571600 = 140971^2 + 91540^2 .

It is a cyclic number.

It is not a de Polignac number, because 28252394441 - 2¹⁰ = 28252393417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28252394392 and 28252394401.

It is not a weakly prime, because it can be changed into another prime (28252304441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126197220 + 14126197221.

It is an arithmetic number, because the mean of its divisors is an integer number (14126197221).

Almost surely, 2^28252394441 is an apocalyptic number.

It is an amenable number.

28252394441 is a deficient number, since it is larger than the sum of its proper divisors (1).

28252394441 is an equidigital number, since it uses as much as digits as its factorization.

28252394441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 44.

The spelling of 28252394441 in words is "twenty-eight billion, two hundred fifty-two million, three hundred ninety-four thousand, four hundred forty-one".