28955025 has 36 divisors (see below), whose sum is σ = 56581200. Its totient is φ = 14037600.

The previous prime is 28955009. The next prime is 28955041. The reversal of 28955025 is 52055982.

28955025 is a `hidden beast` number, since 2 + 89 + 550 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (28955009) and next prime (28955041).

It is not a de Polignac number, because 28955025 - 2⁴ = 28955009 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3375 + ... + 8324.

It is an arithmetic number, because the mean of its divisors is an integer number (1571700).

Almost surely, 2^28955025 is an apocalyptic number.

28955025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28955025 is a deficient number, since it is larger than the sum of its proper divisors (27626175).

28955025 is a wasteful number, since it uses less digits than its factorization.

28955025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11726 (or 11718 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 28955025 is about 5380.9873629289. The cubic root of 28955025 is about 307.0727757384.

The spelling of 28955025 in words is "twenty-eight million, nine hundred fifty-five thousand, twenty-five".