26806270625 has 10 divisors (see below), whose sum is σ = 33497116554. Its totient is φ = 21445016000.

The previous prime is 26806270607. The next prime is 26806270709. The reversal of 26806270625 is 52607260862.

It can be written as a sum of positive squares in 5 ways, for example, as 12841649041 + 13964621584 = 113321^2 + 118172^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26806270625 is a prime.

It is a super-2 number, since 2×26806270625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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 9 ways as a sum of consecutive naturals, for example, 21444392 + ... + 21445641.

Almost surely, 2^26806270625 is an apocalyptic number.

26806270625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26806270625 is a deficient number, since it is larger than the sum of its proper divisors (6690845929).

26806270625 is an frugal number, since it uses more digits than its factorization.

26806270625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42890053 (or 42890038 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 26806270625 in words is "twenty-six billion, eight hundred six million, two hundred seventy thousand, six hundred twenty-five".