28242825 has 48 divisors (see below), whose sum is σ = 51038400. Its totient is φ = 13697280.

The previous prime is 28242791. The next prime is 28242859. The reversal of 28242825 is 52824282.

It is an interprime number because it is at equal distance from previous prime (28242791) and next prime (28242859).

It is not a de Polignac number, because 28242825 - 2⁶ = 28242761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80751 + ... + 81099.

It is an arithmetic number, because the mean of its divisors is an integer number (1063300).

Almost surely, 2^28242825 is an apocalyptic number.

28242825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28242825 is a deficient number, since it is larger than the sum of its proper divisors (22795575).

28242825 is a wasteful number, since it uses less digits than its factorization.

28242825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 453 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The square root of 28242825 is about 5314.3978962814. The cubic root of 28242825 is about 304.5341809823.

The spelling of 28242825 in words is "twenty-eight million, two hundred forty-two thousand, eight hundred twenty-five".