25719663041 has 2 divisors, whose sum is σ = 25719663042. Its totient is φ = 25719663040.

The previous prime is 25719663017. The next prime is 25719663043. The reversal of 25719663041 is 14036691752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19510223041 + 6209440000 = 139679^2 + 78800^2 .

It is a cyclic number.

It is not a de Polignac number, because 25719663041 - 2⁶ = 25719662977 is a prime.

Together with 25719663043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25719662983 and 25719663001.

It is not a weakly prime, because it can be changed into another prime (25719663043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12859831520 + 12859831521.

It is an arithmetic number, because the mean of its divisors is an integer number (12859831521).

Almost surely, 2^25719663041 is an apocalyptic number.

It is an amenable number.

25719663041 is a deficient number, since it is larger than the sum of its proper divisors (1).

25719663041 is an equidigital number, since it uses as much as digits as its factorization.

25719663041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 25719663041 in words is "twenty-five billion, seven hundred nineteen million, six hundred sixty-three thousand, forty-one".