22425545 has 4 divisors (see below), whose sum is σ = 26910660. Its totient is φ = 17940432.

The previous prime is 22425541. The next prime is 22425553. The reversal of 22425545 is 54552422.

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 15649936 + 6775609 = 3956^2 + 2603^2 .

It is a cyclic number.

It is not a de Polignac number, because 22425545 - 2² = 22425541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22425541) 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, 2242550 + ... + 2242559.

It is an arithmetic number, because the mean of its divisors is an integer number (6727665).

Almost surely, 2^22425545 is an apocalyptic number.

It is an amenable number.

22425545 is a deficient number, since it is larger than the sum of its proper divisors (4485115).

22425545 is an equidigital number, since it uses as much as digits as its factorization.

22425545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485114.

The product of its digits is 16000, while the sum is 29.

The square root of 22425545 is about 4735.5617407019. The cubic root of 22425545 is about 281.9990652686. Note that the first 3 decimals are identical.

Adding to 22425545 its reverse (54552422), we get a palindrome (76977967).

The spelling of 22425545 in words is "twenty-two million, four hundred twenty-five thousand, five hundred forty-five".