22542305 has 4 divisors (see below), whose sum is σ = 27050772. Its totient is φ = 18033840.

The previous prime is 22542269. The next prime is 22542313. The reversal of 22542305 is 50324522.

22542305 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

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 11999296 + 10543009 = 3464^2 + 3247^2 .

It is not a de Polignac number, because 22542305 - 2⁸ = 22542049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254226 + ... + 2254235.

It is an arithmetic number, because the mean of its divisors is an integer number (6762693).

Almost surely, 2^22542305 is an apocalyptic number.

It is an amenable number.

22542305 is a deficient number, since it is larger than the sum of its proper divisors (4508467).

22542305 is an equidigital number, since it uses as much as digits as its factorization.

22542305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508466.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22542305 is about 4747.8737346311. The cubic root of 22542305 is about 282.4876335725.

Adding to 22542305 its reverse (50324522), we get a palindrome (72866827).

The spelling of 22542305 in words is "twenty-two million, five hundred forty-two thousand, three hundred five".