25229312 has 48 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 12386304.

The previous prime is 25229291. The next prime is 25229341. The reversal of 25229312 is 21392252.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198593 + ... + 198719.

It is an arithmetic number, because the mean of its divisors is an integer number (1070160).

Almost surely, 2^25229312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25229312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25683840).

25229312 is an abundant number, since it is smaller than the sum of its proper divisors (26138368).

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

25229312 is an equidigital number, since it uses as much as digits as its factorization.

25229312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 226 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 25229312 is about 5022.8788557957. The cubic root of 25229312 is about 293.2930706906.

The spelling of 25229312 in words is "twenty-five million, two hundred twenty-nine thousand, three hundred twelve".