20225633 has 4 divisors (see below), whose sum is σ = 21290160. Its totient is φ = 19161108.

The previous prime is 20225629. The next prime is 20225641. The reversal of 20225633 is 33652202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33652202 = 2 ⋅16826101.

It is a cyclic number.

It is not a de Polignac number, because 20225633 - 2² = 20225629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20225599 and 20225608.

It is not an unprimeable number, because it can be changed into a prime (20225683) 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, 532235 + ... + 532272.

It is an arithmetic number, because the mean of its divisors is an integer number (5322540).

Almost surely, 2^20225633 is an apocalyptic number.

It is an amenable number.

20225633 is a deficient number, since it is larger than the sum of its proper divisors (1064527).

20225633 is a wasteful number, since it uses less digits than its factorization.

20225633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064526.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20225633 is about 4497.2917405923. The cubic root of 20225633 is about 272.4587171981.

Adding to 20225633 its reverse (33652202), we get a palindrome (53877835).

The spelling of 20225633 in words is "twenty million, two hundred twenty-five thousand, six hundred thirty-three".