28225905193 has 2 divisors, whose sum is σ = 28225905194. Its totient is φ = 28225905192.

The previous prime is 28225905143. The next prime is 28225905199. The reversal of 28225905193 is 39150952282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14537607184 + 13688298009 = 120572^2 + 116997^2 .

It is a cyclic number.

It is not a de Polignac number, because 28225905193 - 2²⁵ = 28192350761 is a prime.

It is not a weakly prime, because it can be changed into another prime (28225905199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14112952596 + 14112952597.

It is an arithmetic number, because the mean of its divisors is an integer number (14112952597).

Almost surely, 2^28225905193 is an apocalyptic number.

It is an amenable number.

28225905193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28225905193 is an equidigital number, since it uses as much as digits as its factorization.

28225905193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 28225905193 in words is "twenty-eight billion, two hundred twenty-five million, nine hundred five thousand, one hundred ninety-three".