20875125 has 16 divisors (see below), whose sum is σ = 34736832. Its totient is φ = 11133200.

The previous prime is 20875111. The next prime is 20875139. The reversal of 20875125 is 52157802.

It is an interprime number because it is at equal distance from previous prime (20875111) and next prime (20875139).

It is not a de Polignac number, because 20875125 - 2⁵ = 20875093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20875092 and 20875101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27459 + ... + 28208.

It is an arithmetic number, because the mean of its divisors is an integer number (2171052).

Almost surely, 2^20875125 is an apocalyptic number.

20875125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20875125 is a deficient number, since it is larger than the sum of its proper divisors (13861707).

20875125 is an equidigital number, since it uses as much as digits as its factorization.

20875125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55685 (or 55675 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 20875125 is about 4568.9303999952. The cubic root of 20875125 is about 275.3444719069.

The spelling of 20875125 in words is "twenty million, eight hundred seventy-five thousand, one hundred twenty-five".