25235716917479 has 2 divisors, whose sum is σ = 25235716917480. Its totient is φ = 25235716917478.

The previous prime is 25235716917443. The next prime is 25235716917527. The reversal of 25235716917479 is 97471961753252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25235716917479 - 2²⁰ = 25235715868903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25235716967479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12617858458739 + 12617858458740.

It is an arithmetic number, because the mean of its divisors is an integer number (12617858458740).

Almost surely, 2^{25235716917479} is an apocalyptic number.

25235716917479 is a deficient number, since it is larger than the sum of its proper divisors (1).

25235716917479 is an equidigital number, since it uses as much as digits as its factorization.

25235716917479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200037600, while the sum is 68.

The spelling of 25235716917479 in words is "twenty-five trillion, two hundred thirty-five billion, seven hundred sixteen million, nine hundred seventeen thousand, four hundred seventy-nine".