20624025 has 48 divisors (see below), whose sum is σ = 36872640. Its totient is φ = 10137600.

The previous prime is 20624003. The next prime is 20624041. The reversal of 20624025 is 52042602.

It is not a de Polignac number, because 20624025 - 2⁹ = 20623513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20623992 and 20624010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58249 + ... + 58601.

It is an arithmetic number, because the mean of its divisors is an integer number (768180).

Almost surely, 2^20624025 is an apocalyptic number.

20624025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20624025 is a deficient number, since it is larger than the sum of its proper divisors (16248615).

20624025 is a wasteful number, since it uses less digits than its factorization.

20624025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20624025 is about 4541.3681859105. The cubic root of 20624025 is about 274.2360061908.

Adding to 20624025 its reverse (52042602), we get a palindrome (72666627).

The spelling of 20624025 in words is "twenty million, six hundred twenty-four thousand, twenty-five".