25528825 has 12 divisors (see below), whose sum is σ = 36178240. Its totient is φ = 17505360.

The previous prime is 25528819. The next prime is 25528829. The reversal of 25528825 is 52882552.

It is not a de Polignac number, because 25528825 - 2⁷ = 25528697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25528829) 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 in 11 ways as a sum of consecutive naturals, for example, 72765 + ... + 73114.

Almost surely, 2^25528825 is an apocalyptic number.

25528825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25528825 is a deficient number, since it is larger than the sum of its proper divisors (10649415).

25528825 is a wasteful number, since it uses less digits than its factorization.

25528825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145896 (or 145891 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The square root of 25528825 is about 5052.6057633661. The cubic root of 25528825 is about 294.4491299704.

The spelling of 25528825 in words is "twenty-five million, five hundred twenty-eight thousand, eight hundred twenty-five".