20225554 has 8 divisors (see below), whose sum is σ = 30852720. Its totient is φ = 9941316.

The previous prime is 20225539. The next prime is 20225561. The reversal of 20225554 is 45552202.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85584 + ... + 85819.

It is an arithmetic number, because the mean of its divisors is an integer number (3856590).

Almost surely, 2^20225554 is an apocalyptic number.

20225554 is a deficient number, since it is larger than the sum of its proper divisors (10627166).

20225554 is a wasteful number, since it uses less digits than its factorization.

20225554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171464.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 20225554 is about 4497.2829575200. The cubic root of 20225554 is about 272.4583624624.

Adding to 20225554 its reverse (45552202), we get a palindrome (65777756).

The spelling of 20225554 in words is "twenty million, two hundred twenty-five thousand, five hundred fifty-four".