20120255 has 4 divisors (see below), whose sum is σ = 24144312. Its totient is φ = 16096200.

The previous prime is 20120251. The next prime is 20120257. The reversal of 20120255 is 55202102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55202102 = 2 ⋅27601051.

It is not a de Polignac number, because 20120255 - 2² = 20120251 is a prime.

It is a super-2 number, since 2×20120255² = 809649322530050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2012021 + ... + 2012030.

It is an arithmetic number, because the mean of its divisors is an integer number (6036078).

Almost surely, 2^20120255 is an apocalyptic number.

20120255 is a deficient number, since it is larger than the sum of its proper divisors (4024057).

20120255 is an equidigital number, since it uses as much as digits as its factorization.

20120255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024056.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20120255 is about 4485.5607230312. The cubic root of 20120255 is about 271.9847120516.

Adding to 20120255 its reverse (55202102), we get a palindrome (75322357).

The spelling of 20120255 in words is "twenty million, one hundred twenty thousand, two hundred fifty-five".