22123525 has 24 divisors (see below), whose sum is σ = 28524960. Its totient is φ = 17010240.

The previous prime is 22123499. The next prime is 22123547. The reversal of 22123525 is 52532122.

It is not a de Polignac number, because 22123525 - 2²¹ = 20026373 is a prime.

Its product of digits (1200) is a multiple of the sum of its prime divisors (400).

It is a junction number, because it is equal to n+sod(n) for n = 22123496 and 22123505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78034 + ... + 78316.

It is an arithmetic number, because the mean of its divisors is an integer number (1188540).

Almost surely, 2^22123525 is an apocalyptic number.

22123525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22123525 is a deficient number, since it is larger than the sum of its proper divisors (6401435).

22123525 is a wasteful number, since it uses less digits than its factorization.

22123525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 400 counting only the distinct ones).

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

The square root of 22123525 is about 4703.5651372124. The cubic root of 22123525 is about 280.7273817365.

Adding to 22123525 its reverse (52532122), we get a palindrome (74655647).

The spelling of 22123525 in words is "twenty-two million, one hundred twenty-three thousand, five hundred twenty-five".