28525398553 has 2 divisors, whose sum is σ = 28525398554. Its totient is φ = 28525398552.

The previous prime is 28525398541. The next prime is 28525398607. The reversal of 28525398553 is 35589352582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20205769609 + 8319628944 = 142147^2 + 91212^2 .

It is a cyclic number.

It is not a de Polignac number, because 28525398553 - 2⁵ = 28525398521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28525398494 and 28525398503.

It is not a weakly prime, because it can be changed into another prime (28525396553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14262699276 + 14262699277.

It is an arithmetic number, because the mean of its divisors is an integer number (14262699277).

Almost surely, 2^28525398553 is an apocalyptic number.

It is an amenable number.

28525398553 is a deficient number, since it is larger than the sum of its proper divisors (1).

28525398553 is an equidigital number, since it uses as much as digits as its factorization.

28525398553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960000, while the sum is 55.

The spelling of 28525398553 in words is "twenty-eight billion, five hundred twenty-five million, three hundred ninety-eight thousand, five hundred fifty-three".