28532525 has 24 divisors (see below), whose sum is σ = 41306880. Its totient is φ = 19143360.

The previous prime is 28532519. The next prime is 28532527. The reversal of 28532525 is 52523582.

28532525 = T₂₄₁ + T₂₄₂ + ... + T₅₆₉.

It is not a de Polignac number, because 28532525 - 2⁶ = 28532461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28532491 and 28532500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28532527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6491 + ... + 9959.

It is an arithmetic number, because the mean of its divisors is an integer number (1721120).

Almost surely, 2^28532525 is an apocalyptic number.

28532525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28532525 is a deficient number, since it is larger than the sum of its proper divisors (12774355).

28532525 is a wasteful number, since it uses less digits than its factorization.

28532525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3528 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 28532525 is about 5341.5845027482. The cubic root of 28532525 is about 305.5718912601.

The spelling of 28532525 in words is "twenty-eight million, five hundred thirty-two thousand, five hundred twenty-five".