25275250028 has 12 divisors (see below), whose sum is σ = 50550500112. Its totient is φ = 10832250000.

The previous prime is 25275250001. The next prime is 25275250051. The reversal of 25275250028 is 82005257252.

25275250028 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25275249973 and 25275250000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451343723 + ... + 451343778.

It is an arithmetic number, because the mean of its divisors is an integer number (4212541676).

Almost surely, 2^25275250028 is an apocalyptic number.

25275250028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25275250028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25275250028 is a wasteful number, since it uses less digits than its factorization.

25275250028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902687512 (or 902687510 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The spelling of 25275250028 in words is "twenty-five billion, two hundred seventy-five million, two hundred fifty thousand, twenty-eight".