20625205 has 8 divisors (see below), whose sum is σ = 24903072. Its totient is φ = 16398288.

The previous prime is 20625197. The next prime is 20625217. The reversal of 20625205 is 50252602.

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

It is a cyclic number.

It is not a de Polignac number, because 20625205 - 2³ = 20625197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11839 + ... + 13468.

It is an arithmetic number, because the mean of its divisors is an integer number (3112884).

Almost surely, 2^20625205 is an apocalyptic number.

It is an amenable number.

20625205 is a deficient number, since it is larger than the sum of its proper divisors (4277867).

20625205 is a wasteful number, since it uses less digits than its factorization.

20625205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25475.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20625205 is about 4541.4981008473. The cubic root of 20625205 is about 274.2412362128.

Adding to 20625205 its reverse (50252602), we get a palindrome (70877807).

The spelling of 20625205 in words is "twenty million, six hundred twenty-five thousand, two hundred five".