25804302031 has 2 divisors, whose sum is σ = 25804302032. Its totient is φ = 25804302030.

The previous prime is 25804301987. The next prime is 25804302077. The reversal of 25804302031 is 13020340852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25804302031 - 2¹⁵ = 25804269263 is a prime.

It is a super-2 number, since 2×25804302031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25804302331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12902151015 + 12902151016.

It is an arithmetic number, because the mean of its divisors is an integer number (12902151016).

Almost surely, 2^25804302031 is an apocalyptic number.

25804302031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25804302031 is an equidigital number, since it uses as much as digits as its factorization.

25804302031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 25804302031 its reverse (13020340852), we get a palindrome (38824642883).

The spelling of 25804302031 in words is "twenty-five billion, eight hundred four million, three hundred two thousand, thirty-one".