25222344 has 128 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 6693120.

The previous prime is 25222321. The next prime is 25222349. The reversal of 25222344 is 44322252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a plaindrome in base 15.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150949 + ... + 151115.

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

Almost surely, 2^25222344 is an apocalyptic number.

25222344 is a gapful number since it is divisible by the number (24) 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 25222344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38707200).

25222344 is an abundant number, since it is smaller than the sum of its proper divisors (52192056).

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

25222344 is a wasteful number, since it uses less digits than its factorization.

25222344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 239 counting only the distinct ones).

The product of its digits is 3840, while the sum is 24.

The square root of 25222344 is about 5022.1851817710. The cubic root of 25222344 is about 293.2660669909.

Adding to 25222344 its reverse (44322252), we get a palindrome (69544596).

The spelling of 25222344 in words is "twenty-five million, two hundred twenty-two thousand, three hundred forty-four".