20255277 has 12 divisors (see below), whose sum is σ = 31416576. Its totient is φ = 11574360.

The previous prime is 20255227. The next prime is 20255293. The reversal of 20255277 is 77255202.

It is not a de Polignac number, because 20255277 - 2²⁴ = 3478061 is a prime.

It is a super-4 number, since 4×20255277⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255227) 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 11 ways as a sum of consecutive naturals, for example, 68749 + ... + 69042.

It is an arithmetic number, because the mean of its divisors is an integer number (2618048).

Almost surely, 2^20255277 is an apocalyptic number.

It is an amenable number.

20255277 is a deficient number, since it is larger than the sum of its proper divisors (11161299).

20255277 is a wasteful number, since it uses less digits than its factorization.

20255277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137808 (or 137801 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 20255277 is about 4500.5862951398. The cubic root of 20255277 is about 272.5917632768.

The spelling of 20255277 in words is "twenty million, two hundred fifty-five thousand, two hundred seventy-seven".