20255975 has 6 divisors (see below), whose sum is σ = 25117440. Its totient is φ = 16204760.

The previous prime is 20255953. The next prime is 20255981. The reversal of 20255975 is 57955202.

It is not a de Polignac number, because 20255975 - 2¹⁴ = 20239591 is a prime.

It is a super-3 number, since 3×20255975³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 405095 + ... + 405144.

It is an arithmetic number, because the mean of its divisors is an integer number (4186240).

Almost surely, 2^20255975 is an apocalyptic number.

20255975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20255975 is a deficient number, since it is larger than the sum of its proper divisors (4861465).

20255975 is an equidigital number, since it uses as much as digits as its factorization.

20255975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810249 (or 810244 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 20255975 is about 4500.6638399241. The cubic root of 20255975 is about 272.5948944257.

It can be divided in two parts, 2025 and 5975, that added together give a cube (8000 = 20³).

The spelling of 20255975 in words is "twenty million, two hundred fifty-five thousand, nine hundred seventy-five".