28025005 has 8 divisors (see below), whose sum is σ = 33660000. Its totient is φ = 22400016.

The previous prime is 28024999. The next prime is 28025009. The reversal of 28025005 is 50052082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28025005 - 2¹⁷ = 27893933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6846 + ... + 10144.

It is an arithmetic number, because the mean of its divisors is an integer number (4207500).

Almost surely, 2^28025005 is an apocalyptic number.

It is an amenable number.

28025005 is a deficient number, since it is larger than the sum of its proper divisors (5634995).

28025005 is a wasteful number, since it uses less digits than its factorization.

28025005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003.

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

The square root of 28025005 is about 5293.8648452714. The cubic root of 28025005 is about 303.7492630396.

Adding to 28025005 its reverse (50052082), we get a palindrome (78077087).

The spelling of 28025005 in words is "twenty-eight million, twenty-five thousand, five".