22006525 has 12 divisors (see below), whose sum is σ = 27400032. Its totient is φ = 17533040.

The previous prime is 22006511. The next prime is 22006529. The reversal of 22006525 is 52560022.

It is not a de Polignac number, because 22006525 - 2¹⁷ = 21875453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22006496 and 22006505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22006529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4902 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (2283336).

Almost surely, 2^22006525 is an apocalyptic number.

22006525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22006525 is a deficient number, since it is larger than the sum of its proper divisors (5393507).

22006525 is a wasteful number, since it uses less digits than its factorization.

22006525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620 (or 3615 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22006525 is about 4691.1112755934. Note that the first 3 decimals coincide. The cubic root of 22006525 is about 280.2316323070.

Adding to 22006525 its reverse (52560022), we get a palindrome (74566547).

The spelling of 22006525 in words is "twenty-two million, six thousand, five hundred twenty-five".