20225623 has 4 divisors (see below), whose sum is σ = 22064328. Its totient is φ = 18386920.

The previous prime is 20225617. The next prime is 20225629. The reversal of 20225623 is 32652202.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20225617) and next prime (20225629).

It is a cyclic number.

It is not a de Polignac number, because 20225623 - 2⁵ = 20225591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20225594 and 20225603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20225629) 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, 919336 + ... + 919357.

It is an arithmetic number, because the mean of its divisors is an integer number (5516082).

Almost surely, 2^20225623 is an apocalyptic number.

20225623 is a deficient number, since it is larger than the sum of its proper divisors (1838705).

20225623 is a wasteful number, since it uses less digits than its factorization.

20225623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838704.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20225623 is about 4497.2906288120. The cubic root of 20225623 is about 272.4586722949.

Adding to 20225623 its reverse (32652202), we get a palindrome (52877825).

The spelling of 20225623 in words is "twenty million, two hundred twenty-five thousand, six hundred twenty-three".