25501028 has 12 divisors (see below), whose sum is σ = 51002112. Its totient is φ = 10929000.

The previous prime is 25501027. The next prime is 25501033. The reversal of 25501028 is 82010552.

25501028 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25500994 and 25501012.

It is not an unprimeable number, because it can be changed into a prime (25501027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455348 + ... + 455403.

It is an arithmetic number, because the mean of its divisors is an integer number (4250176).

Almost surely, 2^25501028 is an apocalyptic number.

25501028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25501028 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.

25501028 is a wasteful number, since it uses less digits than its factorization.

25501028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910762 (or 910760 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 25501028 is about 5049.8542553226. The cubic root of 25501028 is about 294.3422210817.

The spelling of 25501028 in words is "twenty-five million, five hundred one thousand, twenty-eight".