22025525 has 12 divisors (see below), whose sum is σ = 27420864. Its totient is φ = 17550000.

The previous prime is 22025473. The next prime is 22025527. The reversal of 22025525 is 52552022.

It is a happy number.

It is not a de Polignac number, because 22025525 - 2¹² = 22021429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22025525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22025527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5150 + ... + 8400.

It is an arithmetic number, because the mean of its divisors is an integer number (2285072).

Almost surely, 2^22025525 is an apocalyptic number.

22025525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22025525 is a deficient number, since it is larger than the sum of its proper divisors (5395339).

22025525 is a wasteful number, since it uses less digits than its factorization.

22025525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 22025525 is about 4693.1359451863. The cubic root of 22025525 is about 280.3122579309.

Adding to 22025525 its reverse (52552022), we get a palindrome (74577547).

The spelling of 22025525 in words is "twenty-two million, twenty-five thousand, five hundred twenty-five".