28610825 has 24 divisors (see below), whose sum is σ = 36830976. Its totient is φ = 22032000.

The previous prime is 28610821. The next prime is 28610833. The reversal of 28610825 is 52801682.

It is not a de Polignac number, because 28610825 - 2² = 28610821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28610791 and 28610800.

It is not an unprimeable number, because it can be changed into a prime (28610821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105440 + ... + 105710.

It is an arithmetic number, because the mean of its divisors is an integer number (1534624).

Almost surely, 2^28610825 is an apocalyptic number.

28610825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28610825 is a deficient number, since it is larger than the sum of its proper divisors (8220151).

28610825 is a wasteful number, since it uses less digits than its factorization.

28610825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 28610825 is about 5348.9087672160. The cubic root of 28610825 is about 305.8511564839.

It can be divided in two parts, 286 and 10825, that added together give a palindrome (11111).

The spelling of 28610825 in words is "twenty-eight million, six hundred ten thousand, eight hundred twenty-five".