22252520 has 16 divisors (see below), whose sum is σ = 50068260. Its totient is φ = 8900992.

The previous prime is 22252519. The next prime is 22252537. The reversal of 22252520 is 2525222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21141604 + 1110916 = 4598^2 + 1054^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22252492 and 22252501.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 278117 + ... + 278196.

Almost surely, 2^22252520 is an apocalyptic number.

22252520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22252520 is an abundant number, since it is smaller than the sum of its proper divisors (27815740).

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

22252520 is a wasteful number, since it uses less digits than its factorization.

22252520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556324 (or 556320 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 22252520 is about 4717.2576779311. The cubic root of 22252520 is about 281.2719344210.

Adding to 22252520 its reverse (2525222), we get a palindrome (24777742).

It can be divided in two parts, 2 and 2252520, that added together give a palindrome (2252522).

The spelling of 22252520 in words is "twenty-two million, two hundred fifty-two thousand, five hundred twenty".