20255075 has 12 divisors (see below), whose sum is σ = 26594280. Its totient is φ = 15250560.

The previous prime is 20255057. The next prime is 20255077. The reversal of 20255075 is 57055202.

It is a de Polignac number, because none of the positive numbers 2^k-20255075 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20255077) 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, 23405 + ... + 24254.

It is an arithmetic number, because the mean of its divisors is an integer number (2216190).

Almost surely, 2^20255075 is an apocalyptic number.

20255075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20255075 is a deficient number, since it is larger than the sum of its proper divisors (6339205).

20255075 is a wasteful number, since it uses less digits than its factorization.

20255075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47686 (or 47681 counting only the distinct ones).

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

The square root of 20255075 is about 4500.5638535632. The cubic root of 20255075 is about 272.5908571143.

The spelling of 20255075 in words is "twenty million, two hundred fifty-five thousand, seventy-five".