25556132226 has 16 divisors (see below), whose sum is σ = 51114700224. Its totient is φ = 8518304784.

The previous prime is 25556132183. The next prime is 25556132233. The reversal of 25556132226 is 62223165552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52996 + ... + 232208.

It is an arithmetic number, because the mean of its divisors is an integer number (3194668764).

Almost surely, 2^25556132226 is an apocalyptic number.

25556132226 is an abundant number, since it is smaller than the sum of its proper divisors (25558567998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25556132226 is a wasteful number, since it uses less digits than its factorization.

25556132226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202985.

The product of its digits is 216000, while the sum is 39.

Adding to 25556132226 its reverse (62223165552), we get a palindrome (87779297778).

The spelling of 25556132226 in words is "twenty-five billion, five hundred fifty-six million, one hundred thirty-two thousand, two hundred twenty-six".