26501512765025 has 6 divisors (see below), whose sum is σ = 32861875828662. Its totient is φ = 21201210212000.

The previous prime is 26501512764971. The next prime is 26501512765031. The reversal of 26501512765025 is 52056721510562.

It can be written as a sum of positive squares in 3 ways, for example, as 6783232727296 + 19718280037729 = 2604464^2 + 4440527^2 .

It is not a de Polignac number, because 26501512765025 - 2¹⁶ = 26501512699489 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 530030255276 + ... + 530030255325.

It is an arithmetic number, because the mean of its divisors is an integer number (5476979304777).

Almost surely, 2^{26501512765025} is an apocalyptic number.

26501512765025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26501512765025 is a deficient number, since it is larger than the sum of its proper divisors (6360363063637).

26501512765025 is a wasteful number, since it uses less digits than its factorization.

26501512765025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060060510611 (or 1060060510606 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 47.

The spelling of 26501512765025 in words is "twenty-six trillion, five hundred one billion, five hundred twelve million, seven hundred sixty-five thousand, twenty-five".