25285028 has 24 divisors (see below), whose sum is σ = 46199160. Its totient is φ = 12097280.

The previous prime is 25285009. The next prime is 25285031. The reversal of 25285028 is 82058252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4418404 + 20866624 = 2102^2 + 4568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25284985 and 25285003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7238 + ... + 10146.

It is an arithmetic number, because the mean of its divisors is an integer number (1924965).

Almost surely, 2^25285028 is an apocalyptic number.

It is an amenable number.

25285028 is a deficient number, since it is larger than the sum of its proper divisors (20914132).

25285028 is a wasteful number, since it uses less digits than its factorization.

25285028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 25285028 is about 5028.4220188843. The cubic root of 25285028 is about 293.5088131612.

The spelling of 25285028 in words is "twenty-five million, two hundred eighty-five thousand, twenty-eight".