22425518 has 4 divisors (see below), whose sum is σ = 33638280. Its totient is φ = 11212758.

The previous prime is 22425517. The next prime is 22425523. The reversal of 22425518 is 81552422.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606378 + ... + 5606381.

It is an arithmetic number, because the mean of its divisors is an integer number (8409570).

Almost surely, 2^22425518 is an apocalyptic number.

22425518 is a deficient number, since it is larger than the sum of its proper divisors (11212762).

22425518 is a wasteful number, since it uses less digits than its factorization.

22425518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11212761.

The product of its digits is 6400, while the sum is 29.

The square root of 22425518 is about 4735.5588899305. The cubic root of 22425518 is about 281.9989520944.

The spelling of 22425518 in words is "twenty-two million, four hundred twenty-five thousand, five hundred eighteen".