26525613622489 has 2 divisors, whose sum is σ = 26525613622490. Its totient is φ = 26525613622488.

The previous prime is 26525613622477. The next prime is 26525613622493. The reversal of 26525613622489 is 98422631652562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14658690996889 + 11866922625600 = 3828667^2 + 3444840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26525613622489 is a prime.

It is not a weakly prime, because it can be changed into another prime (26525613622429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13262806811244 + 13262806811245.

It is an arithmetic number, because the mean of its divisors is an integer number (13262806811245).

Almost surely, 2^{26525613622489} is an apocalyptic number.

It is an amenable number.

26525613622489 is a deficient number, since it is larger than the sum of its proper divisors (1).

26525613622489 is an equidigital number, since it uses as much as digits as its factorization.

26525613622489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74649600, while the sum is 61.

The spelling of 26525613622489 in words is "twenty-six trillion, five hundred twenty-five billion, six hundred thirteen million, six hundred twenty-two thousand, four hundred eighty-nine".