25528775 has 12 divisors (see below), whose sum is σ = 32254632. Its totient is φ = 20036640.

The previous prime is 25528753. The next prime is 25528777. The reversal of 25528775 is 57782552.

It is not a de Polignac number, because 25528775 - 2¹⁰ = 25527751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25528777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8309 + ... + 10958.

It is an arithmetic number, because the mean of its divisors is an integer number (2687886).

Almost surely, 2^25528775 is an apocalyptic number.

25528775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25528775 is a deficient number, since it is larger than the sum of its proper divisors (6725857).

25528775 is a wasteful number, since it uses less digits than its factorization.

25528775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19330 (or 19325 counting only the distinct ones).

The product of its digits is 196000, while the sum is 41.

The square root of 25528775 is about 5052.6008154217. The cubic root of 25528775 is about 294.4489377372.

The spelling of 25528775 in words is "twenty-five million, five hundred twenty-eight thousand, seven hundred seventy-five".