26400125015 has 16 divisors (see below), whose sum is σ = 34789049856. Its totient is φ = 19072932000.

The previous prime is 26400125009. The next prime is 26400125057. The reversal of 26400125015 is 51052100462.

It is not a de Polignac number, because 26400125015 - 2⁴ = 26400124999 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1581107 + ... + 1597716.

It is an arithmetic number, because the mean of its divisors is an integer number (2174315616).

Almost surely, 2^26400125015 is an apocalyptic number.

26400125015 is a deficient number, since it is larger than the sum of its proper divisors (8388924841).

26400125015 is a wasteful number, since it uses less digits than its factorization.

26400125015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178990.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 26400125015 its reverse (51052100462), we get a palindrome (77452225477).

The spelling of 26400125015 in words is "twenty-six billion, four hundred million, one hundred twenty-five thousand, fifteen".