28590425 has 12 divisors (see below), whose sum is σ = 35524140. Its totient is φ = 22825920.

The previous prime is 28590391. The next prime is 28590437. The reversal of 28590425 is 52409582.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2253001 + 26337424 = 1501^2 + 5132^2 .

It is not a de Polignac number, because 28590425 - 2⁶ = 28590361 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 16919 + ... + 18531.

It is an arithmetic number, because the mean of its divisors is an integer number (2960345).

Almost surely, 2^28590425 is an apocalyptic number.

28590425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28590425 is a deficient number, since it is larger than the sum of its proper divisors (6933715).

28590425 is a wasteful number, since it uses less digits than its factorization.

28590425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 28590425 is about 5347.0014961659. The cubic root of 28590425 is about 305.7784468585.

The spelling of 28590425 in words is "twenty-eight million, five hundred ninety thousand, four hundred twenty-five".