26625672517 has 2 divisors, whose sum is σ = 26625672518. Its totient is φ = 26625672516.

The previous prime is 26625672511. The next prime is 26625672533. The reversal of 26625672517 is 71527652662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23687056836 + 2938615681 = 153906^2 + 54209^2 .

It is a cyclic number.

It is not a de Polignac number, because 26625672517 - 2⁷ = 26625672389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26625672511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13312836258 + 13312836259.

It is an arithmetic number, because the mean of its divisors is an integer number (13312836259).

Almost surely, 2^26625672517 is an apocalyptic number.

It is an amenable number.

26625672517 is a deficient number, since it is larger than the sum of its proper divisors (1).

26625672517 is an equidigital number, since it uses as much as digits as its factorization.

26625672517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 49.

The spelling of 26625672517 in words is "twenty-six billion, six hundred twenty-five million, six hundred seventy-two thousand, five hundred seventeen".