26286867025 has 12 divisors (see below), whose sum is σ = 32621042700. Its totient is φ = 21013153280.

The previous prime is 26286867011. The next prime is 26286867029. The reversal of 26286867025 is 52076868262.

It can be written as a sum of positive squares in 6 ways, for example, as 3014449216 + 23272417809 = 54904^2 + 152553^2 .

It is not a de Polignac number, because 26286867025 - 2⁵ = 26286866993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26286867029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 375640 + ... + 440089.

It is an arithmetic number, because the mean of its divisors is an integer number (2718420225).

Almost surely, 2^26286867025 is an apocalyptic number.

26286867025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26286867025 is a deficient number, since it is larger than the sum of its proper divisors (6334175675).

26286867025 is a wasteful number, since it uses less digits than its factorization.

26286867025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817028 (or 817023 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 26286867025 in words is "twenty-six billion, two hundred eighty-six million, eight hundred sixty-seven thousand, twenty-five".