28233425 has 12 divisors (see below), whose sum is σ = 38192496. Its totient is φ = 20533200.

The previous prime is 28233421. The next prime is 28233437. The reversal of 28233425 is 52433282.

It is not a de Polignac number, because 28233425 - 2² = 28233421 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28233421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51059 + ... + 51608.

It is an arithmetic number, because the mean of its divisors is an integer number (3182708).

Almost surely, 2^28233425 is an apocalyptic number.

28233425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28233425 is a deficient number, since it is larger than the sum of its proper divisors (9959071).

28233425 is a wasteful number, since it uses less digits than its factorization.

28233425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102688 (or 102683 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 28233425 is about 5313.5134327486. The cubic root of 28233425 is about 304.5003914099.

The spelling of 28233425 in words is "twenty-eight million, two hundred thirty-three thousand, four hundred twenty-five".