25528000028 has 6 divisors (see below), whose sum is σ = 44674000056. Its totient is φ = 12764000012.

The previous prime is 25528000021. The next prime is 25528000049. The reversal of 25528000028 is 82000082552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25527999958 and 25528000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25528000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3191000000 + ... + 3191000007.

It is an arithmetic number, because the mean of its divisors is an integer number (7445666676).

Almost surely, 2^25528000028 is an apocalyptic number.

It is an amenable number.

25528000028 is a deficient number, since it is larger than the sum of its proper divisors (19146000028).

25528000028 is a wasteful number, since it uses less digits than its factorization.

25528000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382000011 (or 6382000009 counting only the distinct ones).

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

The spelling of 25528000028 in words is "twenty-five billion, five hundred twenty-eight million, twenty-eight", and thus it is an aban number.