22061525 has 6 divisors (see below), whose sum is σ = 27356322. Its totient is φ = 17649200.

The previous prime is 22061513. The next prime is 22061569. The reversal of 22061525 is 52516022.

It can be written as a sum of positive squares in 3 ways, for example, as 27889 + 22033636 = 167^2 + 4694^2 .

It is not a de Polignac number, because 22061525 - 2⁸ = 22061269 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 22061525.

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 5 ways as a sum of consecutive naturals, for example, 441206 + ... + 441255.

It is an arithmetic number, because the mean of its divisors is an integer number (4559387).

Almost surely, 2^22061525 is an apocalyptic number.

22061525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22061525 is a deficient number, since it is larger than the sum of its proper divisors (5294797).

22061525 is an equidigital number, since it uses as much as digits as its factorization.

22061525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882471 (or 882466 counting only the distinct ones).

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

The square root of 22061525 is about 4696.9697678397. The cubic root of 22061525 is about 280.4648952057.

Adding to 22061525 its reverse (52516022), we get a palindrome (74577547).

The spelling of 22061525 in words is "twenty-two million, sixty-one thousand, five hundred twenty-five".