20254005 has 24 divisors (see below), whose sum is σ = 36241920. Its totient is φ = 10452960.

The previous prime is 20253979. The next prime is 20254009. The reversal of 20254005 is 50045202.

It is not a de Polignac number, because 20254005 - 2⁵ = 20253973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5865 + ... + 8654.

It is an arithmetic number, because the mean of its divisors is an integer number (1510080).

Almost surely, 2^20254005 is an apocalyptic number.

It is an amenable number.

20254005 is a deficient number, since it is larger than the sum of its proper divisors (15987915).

20254005 is a wasteful number, since it uses less digits than its factorization.

20254005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14561 (or 14558 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 20254005 is about 4500.4449779994. Note that the first 3 decimals coincide. The cubic root of 20254005 is about 272.5860570439.

Adding to 20254005 its reverse (50045202), we get a palindrome (70299207).

The spelling of 20254005 in words is "twenty million, two hundred fifty-four thousand, five".