20425623 has 8 divisors (see below), whose sum is σ = 27696000. Its totient is φ = 13386168.

The previous prime is 20425607. The next prime is 20425637. The reversal of 20425623 is 32652402.

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

It is not a de Polignac number, because 20425623 - 2⁴ = 20425607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20425593 and 20425602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57523 + ... + 57876.

It is an arithmetic number, because the mean of its divisors is an integer number (3462000).

Almost surely, 2^20425623 is an apocalyptic number.

20425623 is a deficient number, since it is larger than the sum of its proper divisors (7270377).

20425623 is a wasteful number, since it uses less digits than its factorization.

20425623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115461.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20425623 is about 4519.4715399038. The cubic root of 20425623 is about 273.3537926717.

The spelling of 20425623 in words is "twenty million, four hundred twenty-five thousand, six hundred twenty-three".