25367095561 has 2 divisors, whose sum is σ = 25367095562. Its totient is φ = 25367095560.

The previous prime is 25367095541. The next prime is 25367095583. The reversal of 25367095561 is 16559076352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21095819536 + 4271276025 = 145244^2 + 65355^2 .

It is a cyclic number.

It is not a de Polignac number, because 25367095561 - 2⁷ = 25367095433 is a prime.

It is not a weakly prime, because it can be changed into another prime (25367095541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12683547780 + 12683547781.

It is an arithmetic number, because the mean of its divisors is an integer number (12683547781).

Almost surely, 2^25367095561 is an apocalyptic number.

It is an amenable number.

25367095561 is a deficient number, since it is larger than the sum of its proper divisors (1).

25367095561 is an equidigital number, since it uses as much as digits as its factorization.

25367095561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 25367095561 in words is "twenty-five billion, three hundred sixty-seven million, ninety-five thousand, five hundred sixty-one".