28023525 has 36 divisors (see below), whose sum is σ = 51068160. Its totient is φ = 14685600.

The previous prime is 28023521. The next prime is 28023529. The reversal of 28023525 is 52532082.

It is an interprime number because it is at equal distance from previous prime (28023521) and next prime (28023529).

It is not a de Polignac number, because 28023525 - 2² = 28023521 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28023521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12220 + ... + 14330.

It is an arithmetic number, because the mean of its divisors is an integer number (1418560).

Almost surely, 2^28023525 is an apocalyptic number.

28023525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28023525 is a deficient number, since it is larger than the sum of its proper divisors (23044635).

28023525 is a wasteful number, since it uses less digits than its factorization.

28023525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2178 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28023525 is about 5293.7250589731. The cubic root of 28023525 is about 303.7439159478.

The spelling of 28023525 in words is "twenty-eight million, twenty-three thousand, five hundred twenty-five".