28205725039 has 2 divisors, whose sum is σ = 28205725040. Its totient is φ = 28205725038.

The previous prime is 28205724991. The next prime is 28205725081. The reversal of 28205725039 is 93052750282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28205725039 - 2¹⁷ = 28205593967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28205724986 and 28205725004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28205725939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14102862519 + 14102862520.

It is an arithmetic number, because the mean of its divisors is an integer number (14102862520).

Almost surely, 2^28205725039 is an apocalyptic number.

28205725039 is a deficient number, since it is larger than the sum of its proper divisors (1).

28205725039 is an equidigital number, since it uses as much as digits as its factorization.

28205725039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 28205725039 in words is "twenty-eight billion, two hundred five million, seven hundred twenty-five thousand, thirty-nine".