28090425 has 48 divisors (see below), whose sum is σ = 51425280. Its totient is φ = 13416000.

The previous prime is 28090411. The next prime is 28090457. The reversal of 28090425 is 52409082.

It is not a de Polignac number, because 28090425 - 2⁵ = 28090393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28090392 and 28090401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64960 + ... + 65390.

It is an arithmetic number, because the mean of its divisors is an integer number (1071360).

Almost surely, 2^28090425 is an apocalyptic number.

28090425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28090425 is a deficient number, since it is larger than the sum of its proper divisors (23334855).

28090425 is a wasteful number, since it uses less digits than its factorization.

28090425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28090425 is about 5300.0400941880. The cubic root of 28090425 is about 303.9854311174.

The spelling of 28090425 in words is "twenty-eight million, ninety thousand, four hundred twenty-five".