25528387 has 2 divisors, whose sum is σ = 25528388. Its totient is φ = 25528386.

The previous prime is 25528361. The next prime is 25528411. The reversal of 25528387 is 78382552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25528387 - 2⁷ = 25528259 is a prime.

It is not a weakly prime, because it can be changed into another prime (23528387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764193 + 12764194.

It is an arithmetic number, because the mean of its divisors is an integer number (12764194).

Almost surely, 2^25528387 is an apocalyptic number.

25528387 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528387 is an equidigital number, since it uses as much as digits as its factorization.

25528387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 25528387 is about 5052.5624192087. The cubic root of 25528387 is about 294.4474459987.

The spelling of 25528387 in words is "twenty-five million, five hundred twenty-eight thousand, three hundred eighty-seven".