26131005225 has 36 divisors (see below), whose sum is σ = 50403811276. Its totient is φ = 12864493440.

The previous prime is 26131005211. The next prime is 26131005233. The reversal of 26131005225 is 52250013162.

It is a happy number.

26131005225 is a `hidden beast` number, since 2 + 6 + 131 + 0 + 0 + 522 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 6471880704 + 19659124521 = 80448^2 + 140211^2 .

It is not a de Polignac number, because 26131005225 - 2⁶ = 26131005161 is a prime.

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 in 35 ways as a sum of consecutive naturals, for example, 4463914 + ... + 4469763.

Almost surely, 2^26131005225 is an apocalyptic number.

26131005225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26131005225 is a deficient number, since it is larger than the sum of its proper divisors (24272806051).

26131005225 is a wasteful number, since it uses less digits than its factorization.

26131005225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8933706 (or 8933698 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 26131005225 its reverse (52250013162), we get a palindrome (78381018387).

The spelling of 26131005225 in words is "twenty-six billion, one hundred thirty-one million, five thousand, two hundred twenty-five".