20250220859 has 4 divisors (see below), whose sum is σ = 22091150040. Its totient is φ = 18409291680.

The previous prime is 20250220841. The next prime is 20250220889. The reversal of 20250220859 is 95802205202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20250220859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20250220829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920464574 + ... + 920464595.

It is an arithmetic number, because the mean of its divisors is an integer number (5522787510).

Almost surely, 2^20250220859 is an apocalyptic number.

20250220859 is a deficient number, since it is larger than the sum of its proper divisors (1840929181).

20250220859 is a wasteful number, since it uses less digits than its factorization.

20250220859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840929180.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 20250220859 in words is "twenty billion, two hundred fifty million, two hundred twenty thousand, eight hundred fifty-nine".