22016525 has 6 divisors (see below), whose sum is σ = 27300522. Its totient is φ = 17613200.

The previous prime is 22016507. The next prime is 22016557. The reversal of 22016525 is 52561022.

It can be written as a sum of positive squares in 3 ways, for example, as 3988009 + 18028516 = 1997^2 + 4246^2 .

It is not a de Polignac number, because 22016525 - 2¹² = 22012429 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 22016525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 440306 + ... + 440355.

It is an arithmetic number, because the mean of its divisors is an integer number (4550087).

Almost surely, 2^22016525 is an apocalyptic number.

22016525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22016525 is a deficient number, since it is larger than the sum of its proper divisors (5283997).

22016525 is an equidigital number, since it uses as much as digits as its factorization.

22016525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880671 (or 880666 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 22016525 is about 4692.1770000715. The cubic root of 22016525 is about 280.2740726281.

Adding to 22016525 its reverse (52561022), we get a palindrome (74577547).

The spelling of 22016525 in words is "twenty-two million, sixteen thousand, five hundred twenty-five".