26401375251525 has 24 divisors (see below), whose sum is σ = 43660311141600. Its totient is φ = 14077495599040.

The previous prime is 26401375251521. The next prime is 26401375251539. The reversal of 26401375251525 is 52515257310462.

It is not a de Polignac number, because 26401375251525 - 2² = 26401375251521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401375251521) by changing a digit.

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, 40145007 + ... + 40797356.

It is an arithmetic number, because the mean of its divisors is an integer number (1819179630900).

Almost surely, 2^{26401375251525} is an apocalyptic number.

26401375251525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26401375251525 is a deficient number, since it is larger than the sum of its proper divisors (17258935890075).

26401375251525 is a wasteful number, since it uses less digits than its factorization.

26401375251525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80946725 (or 80946720 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 26401375251525 in words is "twenty-six trillion, four hundred one billion, three hundred seventy-five million, two hundred fifty-one thousand, five hundred twenty-five".