26525614561 has 2 divisors, whose sum is σ = 26525614562. Its totient is φ = 26525614560.

The previous prime is 26525614541. The next prime is 26525614579. The reversal of 26525614561 is 16541652562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19847456161 + 6678158400 = 140881^2 + 81720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26525614561 is a prime.

It is not a weakly prime, because it can be changed into another prime (26525614541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13262807280 + 13262807281.

It is an arithmetic number, because the mean of its divisors is an integer number (13262807281).

Almost surely, 2^26525614561 is an apocalyptic number.

It is an amenable number.

26525614561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26525614561 is an equidigital number, since it uses as much as digits as its factorization.

26525614561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

The spelling of 26525614561 in words is "twenty-six billion, five hundred twenty-five million, six hundred fourteen thousand, five hundred sixty-one".