20625212 has 12 divisors (see below), whose sum is σ = 36414336. Its totient is φ = 10221120.

The previous prime is 20625197. The next prime is 20625217. The reversal of 20625212 is 21252602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625217) 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, 22364 + ... + 23267.

It is an arithmetic number, because the mean of its divisors is an integer number (3034528).

Almost surely, 2^20625212 is an apocalyptic number.

It is an amenable number.

20625212 is a deficient number, since it is larger than the sum of its proper divisors (15789124).

20625212 is a wasteful number, since it uses less digits than its factorization.

20625212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45748 (or 45746 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20625212 is about 4541.4988715181. The cubic root of 20625212 is about 274.2412672378.

Adding to 20625212 its reverse (21252602), we get a palindrome (41877814).

The spelling of 20625212 in words is "twenty million, six hundred twenty-five thousand, two hundred twelve".