20255156 has 24 divisors (see below), whose sum is σ = 36114624. Its totient is φ = 9938880.

The previous prime is 20255153. The next prime is 20255161. The reversal of 20255156 is 65155202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86816 + ... + 87048.

It is an arithmetic number, because the mean of its divisors is an integer number (1504776).

Almost surely, 2^20255156 is an apocalyptic number.

It is an amenable number.

20255156 is a deficient number, since it is larger than the sum of its proper divisors (15859468).

20255156 is a wasteful number, since it uses less digits than its factorization.

20255156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 20255156 is about 4500.5728524267. The cubic root of 20255156 is about 272.5912204772.

The spelling of 20255156 in words is "twenty million, two hundred fifty-five thousand, one hundred fifty-six".