22164525 has 36 divisors (see below), whose sum is σ = 41434848. Its totient is φ = 11304480.

The previous prime is 22164511. The next prime is 22164553. The reversal of 22164525 is 52546122.

It is not a de Polignac number, because 22164525 - 2⁴ = 22164509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3034 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (1150968).

Almost surely, 2^22164525 is an apocalyptic number.

22164525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22164525 is a deficient number, since it is larger than the sum of its proper divisors (19270323).

22164525 is a wasteful number, since it uses less digits than its factorization.

22164525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322 (or 4314 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 22164525 is about 4707.9215159134. The cubic root of 22164525 is about 280.9006922713.

It can be divided in two parts, 221 and 64525, that added together give a palindrome (64746).

The spelling of 22164525 in words is "twenty-two million, one hundred sixty-four thousand, five hundred twenty-five".