25229856 has 48 divisors (see below), whose sum is σ = 68027904. Its totient is φ = 8181504.

The previous prime is 25229843. The next prime is 25229857. The reversal of 25229856 is 65892252.

25229856 is a nontrivial binomial coefficient, being equal to C(7104, 2).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (25229857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 7103.

It is an arithmetic number, because the mean of its divisors is an integer number (1417248).

Almost surely, 2^25229856 is an apocalyptic number.

25229856 is the 7103-rd triangular number and also the 3552-nd hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25229856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34013952).

25229856 is an abundant number, since it is smaller than the sum of its proper divisors (42798048).

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

25229856 is a wasteful number, since it uses less digits than its factorization.

25229856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153 (or 7145 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 25229856 is about 5022.9330077157. The cubic root of 25229856 is about 293.2951786921.

The spelling of 25229856 in words is "twenty-five million, two hundred twenty-nine thousand, eight hundred fifty-six".