20225553 has 8 divisors (see below), whose sum is σ = 27234816. Its totient is φ = 13350000.

The previous prime is 20225539. The next prime is 20225561. The reversal of 20225553 is 35552202.

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

It is not a de Polignac number, because 20225553 - 2⁵ = 20225521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20225503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33073 + ... + 33678.

It is an arithmetic number, because the mean of its divisors is an integer number (3404352).

Almost surely, 2^20225553 is an apocalyptic number.

It is an amenable number.

20225553 is a deficient number, since it is larger than the sum of its proper divisors (7009263).

20225553 is a wasteful number, since it uses less digits than its factorization.

20225553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66855.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 20225553 is about 4497.2828463418. The cubic root of 20225553 is about 272.4583579720.

Adding to 20225553 its reverse (35552202), we get a palindrome (55777755).

The spelling of 20225553 in words is "twenty million, two hundred twenty-five thousand, five hundred fifty-three".