22440325 has 12 divisors (see below), whose sum is σ = 28505988. Its totient is φ = 17513600.

The previous prime is 22440307. The next prime is 22440347. The reversal of 22440325 is 52304422.

It can be written as a sum of positive squares in 6 ways, for example, as 1846881 + 20593444 = 1359^2 + 4538^2 .

It is not a de Polignac number, because 22440325 - 2⁵ = 22440293 is a prime.

It is a super-2 number, since 2×22440325² = 1007136372211250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22440296 and 22440305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9922 + ... + 11971.

It is an arithmetic number, because the mean of its divisors is an integer number (2375499).

Almost surely, 2^22440325 is an apocalyptic number.

22440325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22440325 is a deficient number, since it is larger than the sum of its proper divisors (6065663).

22440325 is a wasteful number, since it uses less digits than its factorization.

22440325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21944 (or 21939 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22440325 is about 4737.1220165835. The cubic root of 22440325 is about 282.0610040214.

Adding to 22440325 its reverse (52304422), we get a palindrome (74744747).

The spelling of 22440325 in words is "twenty-two million, four hundred forty thousand, three hundred twenty-five".