28050625 has 20 divisors (see below), whose sum is σ = 36029092. Its totient is φ = 21816000.

The previous prime is 28050623. The next prime is 28050641. The reversal of 28050625 is 52605082.

It can be written as a sum of positive squares in 10 ways, for example, as 23001616 + 5049009 = 4796^2 + 2247^2 .

It is not a de Polignac number, because 28050625 - 2¹ = 28050623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28050593 and 28050602.

It is not an unprimeable number, because it can be changed into a prime (28050623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22519 + ... + 23731.

Almost surely, 2^28050625 is an apocalyptic number.

28050625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28050625 is a deficient number, since it is larger than the sum of its proper divisors (7978467).

28050625 is an equidigital number, since it uses as much as digits as its factorization.

28050625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 28050625 is about 5296.2840747075. The cubic root of 28050625 is about 303.8417957132.

It can be divided in two parts, 280 and 50625, that added together give a palindrome (50905).

The spelling of 28050625 in words is "twenty-eight million, fifty thousand, six hundred twenty-five".