25528255 has 8 divisors (see below), whose sum is σ = 30937824. Its totient is φ = 20220000.

The previous prime is 25528249. The next prime is 25528259. The reversal of 25528255 is 55282552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25528255 - 2³ = 25528247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25528255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25528259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24771 + ... + 25780.

It is an arithmetic number, because the mean of its divisors is an integer number (3867228).

Almost surely, 2^25528255 is an apocalyptic number.

25528255 is a deficient number, since it is larger than the sum of its proper divisors (5409569).

25528255 is a wasteful number, since it uses less digits than its factorization.

25528255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50657.

The product of its digits is 40000, while the sum is 34.

The square root of 25528255 is about 5052.5493565130. The cubic root of 25528255 is about 294.4469384966.

The spelling of 25528255 in words is "twenty-five million, five hundred twenty-eight thousand, two hundred fifty-five".