20750255 has 8 divisors (see below), whose sum is σ = 25983072. Its totient is φ = 15878368.

The previous prime is 20750239. The next prime is 20750263. The reversal of 20750255 is 55205702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20750255 - 2⁴ = 20750239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90104 + ... + 90333.

It is an arithmetic number, because the mean of its divisors is an integer number (3247884).

Almost surely, 2^20750255 is an apocalyptic number.

20750255 is a deficient number, since it is larger than the sum of its proper divisors (5232817).

20750255 is a wasteful number, since it uses less digits than its factorization.

20750255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180465.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 20750255 is about 4555.2447793725. The cubic root of 20750255 is about 274.7943586592.

Adding to 20750255 its reverse (55205702), we get a palindrome (75955957).

The spelling of 20750255 in words is "twenty million, seven hundred fifty thousand, two hundred fifty-five".