25213244 has 96 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 9520896.

The previous prime is 25213241. The next prime is 25213271. The reversal of 25213244 is 44231252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

Its product of digits (1920) is a multiple of the sum of its prime divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25213241) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 536429 + ... + 536475.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^25213244 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 25213244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29030400).

25213244 is an abundant number, since it is smaller than the sum of its proper divisors (32847556).

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

25213244 is a wasteful number, since it uses less digits than its factorization.

25213244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 96 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 25213244 is about 5021.2791199056. The cubic root of 25213244 is about 293.2307934754.

Adding to 25213244 its reverse (44231252), we get a palindrome (69444496).

The spelling of 25213244 in words is "twenty-five million, two hundred thirteen thousand, two hundred forty-four".