25395071539 has 2 divisors, whose sum is σ = 25395071540. Its totient is φ = 25395071538.

The previous prime is 25395071531. The next prime is 25395071543. The reversal of 25395071539 is 93517059352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25395071539 - 2³ = 25395071531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25395071492 and 25395071501.

It is not a weakly prime, because it can be changed into another prime (25395071531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12697535769 + 12697535770.

It is an arithmetic number, because the mean of its divisors is an integer number (12697535770).

Almost surely, 2^25395071539 is an apocalyptic number.

25395071539 is a deficient number, since it is larger than the sum of its proper divisors (1).

25395071539 is an equidigital number, since it uses as much as digits as its factorization.

25395071539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1275750, while the sum is 49.

The spelling of 25395071539 in words is "twenty-five billion, three hundred ninety-five million, seventy-one thousand, five hundred thirty-nine".