25411974569 has 2 divisors, whose sum is σ = 25411974570. Its totient is φ = 25411974568.

The previous prime is 25411974563. The next prime is 25411974611. The reversal of 25411974569 is 96547911452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18329910544 + 7082064025 = 135388^2 + 84155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25411974569 is a prime.

It is a super-2 number, since 2×25411974569² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25411974569.

It is not a weakly prime, because it can be changed into another prime (25411974563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12705987284 + 12705987285.

It is an arithmetic number, because the mean of its divisors is an integer number (12705987285).

Almost surely, 2^25411974569 is an apocalyptic number.

It is an amenable number.

25411974569 is a deficient number, since it is larger than the sum of its proper divisors (1).

25411974569 is an equidigital number, since it uses as much as digits as its factorization.

25411974569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The spelling of 25411974569 in words is "twenty-five billion, four hundred eleven million, nine hundred seventy-four thousand, five hundred sixty-nine".