25528025 has 12 divisors (see below), whose sum is σ = 32392272. Its totient is φ = 19946640.

The previous prime is 25527977. The next prime is 25528031. The reversal of 25528025 is 52082552.

It is not a de Polignac number, because 25528025 - 2⁶ = 25527961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10799 + ... + 12948.

It is an arithmetic number, because the mean of its divisors is an integer number (2699356).

Almost surely, 2^25528025 is an apocalyptic number.

25528025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25528025 is a deficient number, since it is larger than the sum of its proper divisors (6864247).

25528025 is a wasteful number, since it uses less digits than its factorization.

25528025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800 (or 23795 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 25528025 is about 5052.5265956747. The cubic root of 25528025 is about 294.4460542085.

The spelling of 25528025 in words is "twenty-five million, five hundred twenty-eight thousand, twenty-five".