20250047 has 2 divisors, whose sum is σ = 20250048. Its totient is φ = 20250046.

The previous prime is 20250031. The next prime is 20250049. The reversal of 20250047 is 74005202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20250047 - 2⁴ = 20250031 is a prime.

Together with 20250049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20250049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10125023 + 10125024.

It is an arithmetic number, because the mean of its divisors is an integer number (10125024).

Almost surely, 2^20250047 is an apocalyptic number.

20250047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20250047 is an equidigital number, since it uses as much as digits as its factorization.

20250047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20250047 is about 4500.0052222192. The cubic root of 20250047 is about 272.5682998004.

Adding to 20250047 its reverse (74005202), we get a palindrome (94255249).

The spelling of 20250047 in words is "twenty million, two hundred fifty thousand, forty-seven".