25528 has 8 divisors (see below), whose sum is σ = 47880. Its totient is φ = 12760.

The previous prime is 25523. The next prime is 25537. The reversal of 25528 is 82552.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 25499 and 25508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1588 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (5985).

2²⁵⁵²⁸ is an apocalyptic number.

It is an amenable number.

25528 is a deficient number, since it is larger than the sum of its proper divisors (22352).

25528 is a wasteful number, since it uses less digits than its factorization.

25528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197 (or 3193 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 25528 is about 159.7748415740. The cubic root of 25528 is about 29.4445958090. Note that the first 3 decimals are identical.

It can be divided in two parts, 255 and 28, that multiplied together give a triangular number (7140 = T₁₁₉).

The spelling of 25528 in words is "twenty-five thousand, five hundred twenty-eight".