25326496457 has 2 divisors, whose sum is σ = 25326496458. Its totient is φ = 25326496456.

The previous prime is 25326496451. The next prime is 25326496523. The reversal of 25326496457 is 75469462352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23594188816 + 1732307641 = 153604^2 + 41621^2 .

It is a cyclic number.

It is not a de Polignac number, because 25326496457 - 2⁴ = 25326496441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25326496399 and 25326496408.

It is not a weakly prime, because it can be changed into another prime (25326496451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12663248228 + 12663248229.

It is an arithmetic number, because the mean of its divisors is an integer number (12663248229).

Almost surely, 2^25326496457 is an apocalyptic number.

It is an amenable number.

25326496457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25326496457 is an equidigital number, since it uses as much as digits as its factorization.

25326496457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 53.

The spelling of 25326496457 in words is "twenty-five billion, three hundred twenty-six million, four hundred ninety-six thousand, four hundred fifty-seven".