26651211225 has 24 divisors (see below), whose sum is σ = 44467600320. Its totient is φ = 14083571520.

The previous prime is 26651211211. The next prime is 26651211229. The reversal of 26651211225 is 52211215662.

It is not a de Polignac number, because 26651211225 - 2⁵ = 26651211193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26651211229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1621869 + ... + 1638218.

It is an arithmetic number, because the mean of its divisors is an integer number (1852816680).

Almost surely, 2^26651211225 is an apocalyptic number.

26651211225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26651211225 is a deficient number, since it is larger than the sum of its proper divisors (17816389095).

26651211225 is a wasteful number, since it uses less digits than its factorization.

26651211225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260209 (or 3260204 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

Adding to 26651211225 its reverse (52211215662), we get a palindrome (78862426887).

The spelling of 26651211225 in words is "twenty-six billion, six hundred fifty-one million, two hundred eleven thousand, two hundred twenty-five".