25295673019 has 2 divisors, whose sum is σ = 25295673020. Its totient is φ = 25295673018.

The previous prime is 25295673017. The next prime is 25295673031. The reversal of 25295673019 is 91037659252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25295673019 - 2¹ = 25295673017 is a prime.

It is a super-2 number, since 2×25295673019² (a number of 22 digits) contains 22 as substring.

Together with 25295673017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25295673017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12647836509 + 12647836510.

It is an arithmetic number, because the mean of its divisors is an integer number (12647836510).

Almost surely, 2^25295673019 is an apocalyptic number.

25295673019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25295673019 is an equidigital number, since it uses as much as digits as its factorization.

25295673019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 25295673019 in words is "twenty-five billion, two hundred ninety-five million, six hundred seventy-three thousand, nineteen".