26363778025 has 24 divisors (see below), whose sum is σ = 35601393240. Its totient is φ = 19249866240.

The previous prime is 26363778013. The next prime is 26363778053. The reversal of 26363778025 is 52087736362.

It can be written as a sum of positive squares in 12 ways, for example, as 14107738176 + 12256039849 = 118776^2 + 110707^2 .

It is not a de Polignac number, because 26363778025 - 2⁹ = 26363777513 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 26363778025.

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 23 ways as a sum of consecutive naturals, for example, 426802 + ... + 484651.

It is an arithmetic number, because the mean of its divisors is an integer number (1483391385).

Almost surely, 2^26363778025 is an apocalyptic number.

26363778025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26363778025 is a deficient number, since it is larger than the sum of its proper divisors (9237615215).

26363778025 is a wasteful number, since it uses less digits than its factorization.

26363778025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911565 (or 911560 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 26363778025 in words is "twenty-six billion, three hundred sixty-three million, seven hundred seventy-eight thousand, twenty-five".