22525205 has 4 divisors (see below), whose sum is σ = 27030252. Its totient is φ = 18020160.

The previous prime is 22525201. The next prime is 22525207. The reversal of 22525205 is 50252522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17322244 + 5202961 = 4162^2 + 2281^2 .

It is not a de Polignac number, because 22525205 - 2² = 22525201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22525201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252516 + ... + 2252525.

It is an arithmetic number, because the mean of its divisors is an integer number (6757563).

Almost surely, 2^22525205 is an apocalyptic number.

It is an amenable number.

22525205 is a deficient number, since it is larger than the sum of its proper divisors (4505047).

22525205 is an equidigital number, since it uses as much as digits as its factorization.

22525205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505046.

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

The square root of 22525205 is about 4746.0725868870. The cubic root of 22525205 is about 282.4161862725.

Adding to 22525205 its reverse (50252522), we get a palindrome (72777727).

The spelling of 22525205 in words is "twenty-two million, five hundred twenty-five thousand, two hundred five".