28535725 has 12 divisors (see below), whose sum is σ = 35464000. Its totient is φ = 22777200.

The previous prime is 28535711. The next prime is 28535729. The reversal of 28535725 is 52753582.

It is not a de Polignac number, because 28535725 - 2¹⁹ = 28011437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28535729) 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, 13276 + ... + 15274.

Almost surely, 2^28535725 is an apocalyptic number.

28535725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28535725 is a deficient number, since it is larger than the sum of its proper divisors (6928275).

28535725 is a wasteful number, since it uses less digits than its factorization.

28535725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580 (or 2575 counting only the distinct ones).

The product of its digits is 84000, while the sum is 37.

The square root of 28535725 is about 5341.8840309389. The cubic root of 28535725 is about 305.5833144050.

The spelling of 28535725 in words is "twenty-eight million, five hundred thirty-five thousand, seven hundred twenty-five".