28525529 has 2 divisors, whose sum is σ = 28525530. Its totient is φ = 28525528.

The previous prime is 28525513. The next prime is 28525547. The reversal of 28525529 is 92552582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 14047504 = 3805^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 28525529 - 2⁴ = 28525513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28525492 and 28525501.

It is not a weakly prime, because it can be changed into another prime (28525559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14262764 + 14262765.

It is an arithmetic number, because the mean of its divisors is an integer number (14262765).

Almost surely, 2^28525529 is an apocalyptic number.

It is an amenable number.

28525529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28525529 is an equidigital number, since it uses as much as digits as its factorization.

28525529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 28525529 is about 5340.9296007343. The cubic root of 28525529 is about 305.5469144345.

The spelling of 28525529 in words is "twenty-eight million, five hundred twenty-five thousand, five hundred twenty-nine".