9920255 has 8 divisors (see below), whose sum is σ = 12226272. Its totient is φ = 7721568.

The previous prime is 9920249. The next prime is 9920257. The reversal of 9920255 is 5520299.

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 9920255 - 2¹⁴ = 9903871 is a prime.

It is a super-2 number, since 2×9920255² = 196822918530050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26627 + ... + 26996.

It is an arithmetic number, because the mean of its divisors is an integer number (1528284).

Almost surely, 2^9920255 is an apocalyptic number.

9920255 is a deficient number, since it is larger than the sum of its proper divisors (2306017).

9920255 is a wasteful number, since it uses less digits than its factorization.

9920255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53665.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 9920255 is about 3149.6436306351. The cubic root of 9920255 is about 214.8692552839.

The spelling of 9920255 in words is "nine million, nine hundred twenty thousand, two hundred fifty-five".