25528171 has 2 divisors, whose sum is σ = 25528172. Its totient is φ = 25528170.

The previous prime is 25528157. The next prime is 25528201. The reversal of 25528171 is 17182552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25528171 - 2¹⁵ = 25495403 is a prime.

It is not a weakly prime, because it can be changed into another prime (25528141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764085 + 12764086.

It is an arithmetic number, because the mean of its divisors is an integer number (12764086).

Almost surely, 2^25528171 is an apocalyptic number.

25528171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528171 is an equidigital number, since it uses as much as digits as its factorization.

25528171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 31.

The square root of 25528171 is about 5052.5410438709. The cubic root of 25528171 is about 294.4466155398.

The spelling of 25528171 in words is "twenty-five million, five hundred twenty-eight thousand, one hundred seventy-one".