26416516625 has 8 divisors (see below), whose sum is σ = 32967812904. Its totient is φ = 21133213200.

The previous prime is 26416516619. The next prime is 26416516649. The reversal of 26416516625 is 52661561462.

It can be written as a sum of positive squares in 4 ways, for example, as 95023504 + 26321493121 = 9748^2 + 162239^2 .

It is not a de Polignac number, because 26416516625 - 2²⁰ = 26415468049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105665942 + ... + 105666191.

It is an arithmetic number, because the mean of its divisors is an integer number (4120976613).

Almost surely, 2^26416516625 is an apocalyptic number.

26416516625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26416516625 is a deficient number, since it is larger than the sum of its proper divisors (6551296279).

26416516625 is an equidigital number, since it uses as much as digits as its factorization.

26416516625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211332148 (or 211332138 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The spelling of 26416516625 in words is "twenty-six billion, four hundred sixteen million, five hundred sixteen thousand, six hundred twenty-five".