25312652791 has 2 divisors, whose sum is σ = 25312652792. Its totient is φ = 25312652790.

The previous prime is 25312652747. The next prime is 25312652821. The reversal of 25312652791 is 19725621352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25312652791 - 2⁹ = 25312652279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25312652191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12656326395 + 12656326396.

It is an arithmetic number, because the mean of its divisors is an integer number (12656326396).

Almost surely, 2^25312652791 is an apocalyptic number.

25312652791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25312652791 is an equidigital number, since it uses as much as digits as its factorization.

25312652791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The spelling of 25312652791 in words is "twenty-five billion, three hundred twelve million, six hundred fifty-two thousand, seven hundred ninety-one".