25435416887 has 2 divisors, whose sum is σ = 25435416888. Its totient is φ = 25435416886.

The previous prime is 25435416859. The next prime is 25435416953. The reversal of 25435416887 is 78861453452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25435416887 - 2¹⁶ = 25435351351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25435116887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717708443 + 12717708444.

It is an arithmetic number, because the mean of its divisors is an integer number (12717708444).

Almost surely, 2^25435416887 is an apocalyptic number.

25435416887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25435416887 is an equidigital number, since it uses as much as digits as its factorization.

25435416887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6451200, while the sum is 53.

The spelling of 25435416887 in words is "twenty-five billion, four hundred thirty-five million, four hundred sixteen thousand, eight hundred eighty-seven".