25506116226 has 48 divisors (see below), whose sum is σ = 59060967264. Its totient is φ = 7927124352.

The previous prime is 25506116203. The next prime is 25506116297. The reversal of 25506116226 is 62261160552.

25506116226 is a `hidden beast` number, since 25 + 5 + 0 + 6 + 1 + 1 + 622 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 356760 + ... + 422243.

It is an arithmetic number, because the mean of its divisors is an integer number (1230436818).

Almost surely, 2^25506116226 is an apocalyptic number.

25506116226 is an abundant number, since it is smaller than the sum of its proper divisors (33554851038).

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

25506116226 is a wasteful number, since it uses less digits than its factorization.

25506116226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779135 (or 779132 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 25506116226 its reverse (62261160552), we get a palindrome (87767276778).

The spelling of 25506116226 in words is "twenty-five billion, five hundred six million, one hundred sixteen thousand, two hundred twenty-six".