25226216338 has 16 divisors (see below), whose sum is σ = 38563280280. Its totient is φ = 12371913216.

The previous prime is 25226216333. The next prime is 25226216339. The reversal of 25226216338 is 83361262252.

It can be written as a sum of positive squares in 4 ways, for example, as 24199846969 + 1026369369 = 155563^2 + 32037^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25226216338.

It is not an unprimeable number, because it can be changed into a prime (25226216333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408856 + ... + 466492.

Almost surely, 2^25226216338 is an apocalyptic number.

25226216338 is a deficient number, since it is larger than the sum of its proper divisors (13337063942).

25226216338 is a wasteful number, since it uses less digits than its factorization.

25226216338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61821.

The product of its digits is 207360, while the sum is 40.

The spelling of 25226216338 in words is "twenty-five billion, two hundred twenty-six million, two hundred sixteen thousand, three hundred thirty-eight".