22240425 has 24 divisors (see below), whose sum is σ = 38372544. Its totient is φ = 11344960.

The previous prime is 22240397. The next prime is 22240429. The reversal of 22240425 is 52404222.

It is not a de Polignac number, because 22240425 - 2¹² = 22236329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22240429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4722 + ... + 8171.

It is an arithmetic number, because the mean of its divisors is an integer number (1598856).

Almost surely, 2^22240425 is an apocalyptic number.

22240425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22240425 is a deficient number, since it is larger than the sum of its proper divisors (16132119).

22240425 is a wasteful number, since it uses less digits than its factorization.

22240425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12929 (or 12924 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22240425 is about 4715.9755088423. The cubic root of 22240425 is about 281.2209649039.

Adding to 22240425 its reverse (52404222), we get a palindrome (74644647).

The spelling of 22240425 in words is "twenty-two million, two hundred forty thousand, four hundred twenty-five".