20492125 has 16 divisors (see below), whose sum is σ = 26460720. Its totient is φ = 15825600.

The previous prime is 20492107. The next prime is 20492201. The reversal of 20492125 is 52129402.

It can be written as a sum of positive squares in 8 ways, for example, as 3755844 + 16736281 = 1938^2 + 4091^2 .

It is not a de Polignac number, because 20492125 - 2⁵ = 20492093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20492125.

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, 799 + ... + 6451.

It is an arithmetic number, because the mean of its divisors is an integer number (1653795).

Almost surely, 2^20492125 is an apocalyptic number.

20492125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20492125 is a deficient number, since it is larger than the sum of its proper divisors (5968595).

20492125 is an equidigital number, since it uses as much as digits as its factorization.

20492125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697 (or 5687 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20492125 is about 4526.8228372668. The cubic root of 20492125 is about 273.6501341975.

It can be divided in two parts, 204 and 92125, that added together give a palindrome (92329).

The spelling of 20492125 in words is "twenty million, four hundred ninety-two thousand, one hundred twenty-five".