26453121725 has 6 divisors (see below), whose sum is σ = 32801870970. Its totient is φ = 21162497360.

The previous prime is 26453121703. The next prime is 26453121727. The reversal of 26453121725 is 52712135462.

It can be written as a sum of positive squares in 3 ways, for example, as 220136569 + 26232985156 = 14837^2 + 161966^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26453121725 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26453121727) 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 5 ways as a sum of consecutive naturals, for example, 529062410 + ... + 529062459.

It is an arithmetic number, because the mean of its divisors is an integer number (5466978495).

Almost surely, 2^26453121725 is an apocalyptic number.

26453121725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26453121725 is a deficient number, since it is larger than the sum of its proper divisors (6348749245).

26453121725 is a wasteful number, since it uses less digits than its factorization.

26453121725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058124879 (or 1058124874 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The spelling of 26453121725 in words is "twenty-six billion, four hundred fifty-three million, one hundred twenty-one thousand, seven hundred twenty-five".