25554228 has 24 divisors (see below), whose sum is σ = 68144832. Its totient is φ = 7301184.

The previous prime is 25554227. The next prime is 25554233. The reversal of 25554228 is 82245552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25554223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152025 + ... + 152192.

It is an arithmetic number, because the mean of its divisors is an integer number (2839368).

Almost surely, 2^25554228 is an apocalyptic number.

25554228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25554228 is an abundant number, since it is smaller than the sum of its proper divisors (42590604).

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

25554228 is a wasteful number, since it uses less digits than its factorization.

25554228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304231 (or 304229 counting only the distinct ones).

The product of its digits is 32000, while the sum is 33.

The square root of 25554228 is about 5055.1189896975. The cubic root of 25554228 is about 294.5467635488.

The spelling of 25554228 in words is "twenty-five million, five hundred fifty-four thousand, two hundred twenty-eight".