20254 has 16 divisors (see below), whose sum is σ = 35280. Its totient is φ = 8640.

The previous prime is 20249. The next prime is 20261. The reversal of 20254 is 45202.

20254 = T₅₂ + T₅₃ + ... + T₆₃.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474 + ... + 514.

It is an arithmetic number, because the mean of its divisors is an integer number (2205).

2²⁰²⁵⁴ is an apocalyptic number.

20254 is a deficient number, since it is larger than the sum of its proper divisors (15026).

20254 is a wasteful number, since it uses less digits than its factorization.

20254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 20254 is about 142.3165485810. The cubic root of 20254 is about 27.2586034613.

Adding to 20254 its reverse (45202), we get a palindrome (65456).

It can be divided in two parts, 2025 and 4, that multiplied together give a square (8100 = 90²).

The spelling of 20254 in words is "twenty thousand, two hundred fifty-four".