26125632749 has 2 divisors, whose sum is σ = 26125632750. Its totient is φ = 26125632748.

The previous prime is 26125632727. The next prime is 26125632809. The reversal of 26125632749 is 94723652162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24840912100 + 1284720649 = 157610^2 + 35843^2 .

It is a cyclic number.

It is not a de Polignac number, because 26125632749 - 2²⁰ = 26124584173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26125682749) by changing a digit.

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 as a sum of consecutive naturals, namely, 13062816374 + 13062816375.

It is an arithmetic number, because the mean of its divisors is an integer number (13062816375).

Almost surely, 2^26125632749 is an apocalyptic number.

It is an amenable number.

26125632749 is a deficient number, since it is larger than the sum of its proper divisors (1).

26125632749 is an equidigital number, since it uses as much as digits as its factorization.

26125632749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The spelling of 26125632749 in words is "twenty-six billion, one hundred twenty-five million, six hundred thirty-two thousand, seven hundred forty-nine".