20426125 has 8 divisors (see below), whose sum is σ = 25491960. Its totient is φ = 16340800.

The previous prime is 20426111. The next prime is 20426137. The reversal of 20426125 is 52162402.

It can be written as a sum of positive squares in 4 ways, for example, as 4313929 + 16112196 = 2077^2 + 4014^2 .

It is not a de Polignac number, because 20426125 - 2¹⁹ = 19901837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20426096 and 20426105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81580 + ... + 81829.

It is an arithmetic number, because the mean of its divisors is an integer number (3186495).

Almost surely, 2^20426125 is an apocalyptic number.

20426125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20426125 is a deficient number, since it is larger than the sum of its proper divisors (5065835).

20426125 is an equidigital number, since it uses as much as digits as its factorization.

20426125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163424 (or 163414 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20426125 is about 4519.5270770292. The cubic root of 20426125 is about 273.3560320564.

Adding to 20426125 its reverse (52162402), we get a palindrome (72588527).

The spelling of 20426125 in words is "twenty million, four hundred twenty-six thousand, one hundred twenty-five".