20707125 has 16 divisors (see below), whose sum is σ = 34457280. Its totient is φ = 11043600.

The previous prime is 20707117. The next prime is 20707133. The reversal of 20707125 is 52170702.

It is an interprime number because it is at equal distance from previous prime (20707117) and next prime (20707133).

It is not a de Polignac number, because 20707125 - 2³ = 20707117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20707095 and 20707104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27235 + ... + 27984.

It is an arithmetic number, because the mean of its divisors is an integer number (2153580).

Almost surely, 2^20707125 is an apocalyptic number.

20707125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20707125 is a deficient number, since it is larger than the sum of its proper divisors (13750155).

20707125 is an equidigital number, since it uses as much as digits as its factorization.

20707125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55237 (or 55227 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 20707125 is about 4550.5082133757. The cubic root of 20707125 is about 274.6038372788.

Adding to 20707125 its reverse (52170702), we get a palindrome (72877827).

The spelling of 20707125 in words is "twenty million, seven hundred seven thousand, one hundred twenty-five".