28802425 has 12 divisors (see below), whose sum is σ = 35807356. Its totient is φ = 22982400.

The previous prime is 28802419. The next prime is 28802453. The reversal of 28802425 is 52420882.

It can be written as a sum of positive squares in 6 ways, for example, as 2782224 + 26020201 = 1668^2 + 5101^2 .

It is not a de Polignac number, because 28802425 - 2⁷ = 28802297 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent 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, 10165 + ... + 12685.

Almost surely, 2^28802425 is an apocalyptic number.

28802425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28802425 is a deficient number, since it is larger than the sum of its proper divisors (7004931).

28802425 is a wasteful number, since it uses less digits than its factorization.

28802425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2983 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28802425 is about 5366.7890772789. The cubic root of 28802425 is about 306.5323759584.

The spelling of 28802425 in words is "twenty-eight million, eight hundred two thousand, four hundred twenty-five".