22625155 has 8 divisors (see below), whose sum is σ = 31028832. Its totient is φ = 15514368.

The previous prime is 22625149. The next prime is 22625179. The reversal of 22625155 is 55152622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22625155 - 2⁷ = 22625027 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323182 + ... + 323251.

It is an arithmetic number, because the mean of its divisors is an integer number (3878604).

Almost surely, 2^22625155 is an apocalyptic number.

22625155 is a deficient number, since it is larger than the sum of its proper divisors (8403677).

22625155 is an equidigital number, since it uses as much as digits as its factorization.

22625155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646445.

The product of its digits is 6000, while the sum is 28.

The square root of 22625155 is about 4756.5906908205. The cubic root of 22625155 is about 282.8332871690.

Adding to 22625155 its reverse (55152622), we get a palindrome (77777777).

The spelling of 22625155 in words is "twenty-two million, six hundred twenty-five thousand, one hundred fifty-five".