25253228 has 144 divisors (see below), whose sum is σ = 65155104. Its totient is φ = 8386560.

The previous prime is 25253213. The next prime is 25253237. The reversal of 25253228 is 82235252.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25253228.

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 47 ways as a sum of consecutive naturals, for example, 476450 + ... + 476502.

It is an arithmetic number, because the mean of its divisors is an integer number (452466).

Almost surely, 2^25253228 is an apocalyptic number.

25253228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25253228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32577552).

25253228 is an abundant number, since it is smaller than the sum of its proper divisors (39901876).

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

25253228 is a wasteful number, since it uses less digits than its factorization.

25253228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 103 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 25253228 is about 5025.2589983005. The cubic root of 25253228 is about 293.3857166550.

The spelling of 25253228 in words is "twenty-five million, two hundred fifty-three thousand, two hundred twenty-eight".