22223525 has 12 divisors (see below), whose sum is σ = 27727392. Its totient is φ = 17669040.

The previous prime is 22223519. The next prime is 22223533. The reversal of 22223525 is 52532222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22223525 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22223525.

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, 1514 + ... + 6836.

It is an arithmetic number, because the mean of its divisors is an integer number (2310616).

Almost surely, 2^22223525 is an apocalyptic number.

22223525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22223525 is a deficient number, since it is larger than the sum of its proper divisors (5503867).

22223525 is a wasteful number, since it uses less digits than its factorization.

22223525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500 (or 5495 counting only the distinct ones).

The product of its digits is 2400, while the sum is 23.

The square root of 22223525 is about 4714.1833863353. The cubic root of 22223525 is about 281.1497156866.

Adding to 22223525 its reverse (52532222), we get a palindrome (74755747).

The spelling of 22223525 in words is "twenty-two million, two hundred twenty-three thousand, five hundred twenty-five".