20025117 has 16 divisors (see below), whose sum is σ = 33905280. Its totient is φ = 11442816.

The previous prime is 20025079. The next prime is 20025119. The reversal of 20025117 is 71152002.

It is not a de Polignac number, because 20025117 - 2⁷ = 20024989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20025117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025119) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52788 + ... + 53165.

It is an arithmetic number, because the mean of its divisors is an integer number (2119080).

Almost surely, 2^20025117 is an apocalyptic number.

20025117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20025117 is a deficient number, since it is larger than the sum of its proper divisors (13880163).

20025117 is a wasteful number, since it uses less digits than its factorization.

20025117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105969 (or 105963 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 20025117 is about 4474.9432398635. The cubic root of 20025117 is about 271.5553441707. Note that the first 3 decimals are identical.

Adding to 20025117 its reverse (71152002), we get a palindrome (91177119).

The spelling of 20025117 in words is "twenty million, twenty-five thousand, one hundred seventeen".