20173125 has 80 divisors (see below), whose sum is σ = 40487040. Its totient is φ = 8736000.

The previous prime is 20173091. The next prime is 20173133. The reversal of 20173125 is 52137102.

It is not a de Polignac number, because 20173125 - 2⁹ = 20172613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 380599 + ... + 380651.

It is an arithmetic number, because the mean of its divisors is an integer number (506088).

Almost surely, 2^20173125 is an apocalyptic number.

20173125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20173125 is an abundant number, since it is smaller than the sum of its proper divisors (20313915).

20173125 is an equidigital number, since it uses as much as digits as its factorization.

20173125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 20173125 is about 4491.4502112347. The cubic root of 20173125 is about 272.2227351248. Note that the first 3 decimals are identical.

The spelling of 20173125 in words is "twenty million, one hundred seventy-three thousand, one hundred twenty-five".