28882625 has 16 divisors (see below), whose sum is σ = 36238800. Its totient is φ = 22982400.

The previous prime is 28882621. The next prime is 28882657. The reversal of 28882625 is 52628882.

It can be written as a sum of positive squares in 8 ways, for example, as 5340721 + 23541904 = 2311^2 + 4852^2 .

It is not a de Polignac number, because 28882625 - 2² = 28882621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28882621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28121 + ... + 29129.

It is an arithmetic number, because the mean of its divisors is an integer number (2264925).

Almost surely, 2^28882625 is an apocalyptic number.

28882625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28882625 is a deficient number, since it is larger than the sum of its proper divisors (7356175).

28882625 is a wasteful number, since it uses less digits than its factorization.

28882625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1243 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 28882625 is about 5374.2557624289. The cubic root of 28882625 is about 306.8166241763.

The spelling of 28882625 in words is "twenty-eight million, eight hundred eighty-two thousand, six hundred twenty-five".