20250811405 has 16 divisors (see below), whose sum is σ = 26516865024. Its totient is φ = 14724134080.

The previous prime is 20250811379. The next prime is 20250811433. The reversal of 20250811405 is 50411805202.

It is not a de Polignac number, because 20250811405 - 2¹⁵ = 20250778637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182772 + ... + 271858.

It is an arithmetic number, because the mean of its divisors is an integer number (1657304064).

Almost surely, 2^20250811405 is an apocalyptic number.

It is an amenable number.

20250811405 is a deficient number, since it is larger than the sum of its proper divisors (6266053619).

20250811405 is a wasteful number, since it uses less digits than its factorization.

20250811405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93236.

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 20250811405 in words is "twenty billion, two hundred fifty million, eight hundred eleven thousand, four hundred five".