25222204226 has 4 divisors (see below), whose sum is σ = 37833306342. Its totient is φ = 12611102112.

The previous prime is 25222204193. The next prime is 25222204237. The reversal of 25222204226 is 62240222252.

It is a Cunningham number, because it is equal to 158815²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 25222204225 + 1 = 158815^2 + 1^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6305551055 + ... + 6305551058.

Almost surely, 2^25222204226 is an apocalyptic number.

25222204226 is a deficient number, since it is larger than the sum of its proper divisors (12611102116).

25222204226 is a wasteful number, since it uses less digits than its factorization.

25222204226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12611102115.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 25222204226 its reverse (62240222252), we get a palindrome (87462426478).

The spelling of 25222204226 in words is "twenty-five billion, two hundred twenty-two million, two hundred four thousand, two hundred twenty-six".