25856234351 has 2 divisors, whose sum is σ = 25856234352. Its totient is φ = 25856234350.

The previous prime is 25856234317. The next prime is 25856234401. The reversal of 25856234351 is 15343265852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25856234351 - 2²² = 25852040047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25856231351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12928117175 + 12928117176.

It is an arithmetic number, because the mean of its divisors is an integer number (12928117176).

Almost surely, 2^25856234351 is an apocalyptic number.

25856234351 is a deficient number, since it is larger than the sum of its proper divisors (1).

25856234351 is an equidigital number, since it uses as much as digits as its factorization.

25856234351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 44.

The spelling of 25856234351 in words is "twenty-five billion, eight hundred fifty-six million, two hundred thirty-four thousand, three hundred fifty-one".