22425312 has 192 divisors, whose sum is σ = 77220864. Its totient is φ = 5529600.

The previous prime is 22425311. The next prime is 22425313. The reversal of 22425312 is 21352422.

It is an interprime number because it is at equal distance from previous prime (22425311) and next prime (22425313).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425311) 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, 148437 + ... + 148587.

It is an arithmetic number, because the mean of its divisors is an integer number (402192).

Almost surely, 2^22425312 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 22425312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38610432).

22425312 is an abundant number, since it is smaller than the sum of its proper divisors (54795552).

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

22425312 is a wasteful number, since it uses less digits than its factorization.

22425312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 193 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 22425312 is about 4735.5371395439. The cubic root of 22425312 is about 281.9980886144.

Adding to 22425312 its reverse (21352422), we get a palindrome (43777734).

The spelling of 22425312 in words is "twenty-two million, four hundred twenty-five thousand, three hundred twelve".