25582228 has 24 divisors (see below), whose sum is σ = 51331392. Its totient is φ = 10928064.

The previous prime is 25582211. The next prime is 25582231. The reversal of 25582228 is 82228552.

It is a junction number, because it is equal to n+sod(n) for n = 25582193 and 25582202.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8400 + ... + 11032.

It is an arithmetic number, because the mean of its divisors is an integer number (2138808).

Almost surely, 2^25582228 is an apocalyptic number.

25582228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25582228 is an abundant number, since it is smaller than the sum of its proper divisors (25749164).

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

25582228 is a wasteful number, since it uses less digits than its factorization.

25582228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991 (or 2989 counting only the distinct ones).

The product of its digits is 25600, while the sum is 34.

The square root of 25582228 is about 5057.8877014026. The cubic root of 25582228 is about 294.6543034700.

The spelling of 25582228 in words is "twenty-five million, five hundred eighty-two thousand, two hundred twenty-eight".