28599225 has 12 divisors (see below), whose sum is σ = 47284176. Its totient is φ = 15252880.

The previous prime is 28599211. The next prime is 28599239. The reversal of 28599225 is 52299582.

It is an interprime number because it is at equal distance from previous prime (28599211) and next prime (28599239).

It is not a de Polignac number, because 28599225 - 2¹⁰ = 28598201 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190587 + ... + 190736.

It is an arithmetic number, because the mean of its divisors is an integer number (3940348).

Almost surely, 2^28599225 is an apocalyptic number.

28599225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28599225 is a deficient number, since it is larger than the sum of its proper divisors (18684951).

28599225 is a wasteful number, since it uses less digits than its factorization.

28599225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381336 (or 381331 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 28599225 is about 5347.8243239658. The cubic root of 28599225 is about 305.8098160354.

The spelling of 28599225 in words is "twenty-eight million, five hundred ninety-nine thousand, two hundred twenty-five".