25807423819 has 2 divisors, whose sum is σ = 25807423820. Its totient is φ = 25807423818.

The previous prime is 25807423787. The next prime is 25807423823. The reversal of 25807423819 is 91832470852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25807423819 - 2⁵ = 25807423787 is a prime.

It is a super-2 number, since 2×25807423819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25807420819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12903711909 + 12903711910.

It is an arithmetic number, because the mean of its divisors is an integer number (12903711910).

Almost surely, 2^25807423819 is an apocalyptic number.

25807423819 is a deficient number, since it is larger than the sum of its proper divisors (1).

25807423819 is an equidigital number, since it uses as much as digits as its factorization.

25807423819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 25807423819 in words is "twenty-five billion, eight hundred seven million, four hundred twenty-three thousand, eight hundred nineteen".