20255850 has 36 divisors (see below), whose sum is σ = 54421926. Its totient is φ = 5401440.

The previous prime is 20255839. The next prime is 20255897. The reversal of 20255850 is 5855202.

It can be written as a sum of positive squares in 3 ways, for example, as 8946081 + 11309769 = 2991^2 + 3363^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 22057 + ... + 22956.

Almost surely, 2^20255850 is an apocalyptic number.

20255850 is an abundant number, since it is smaller than the sum of its proper divisors (34166076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20255850 is a wasteful number, since it uses less digits than its factorization.

20255850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45031 (or 45023 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 20255850 is about 4500.6499530623. The cubic root of 20255850 is about 272.5943336952.

It can be divided in two parts, 2025 and 5850, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 20255850 in words is "twenty million, two hundred fifty-five thousand, eight hundred fifty".