25823350549 has 2 divisors, whose sum is σ = 25823350550. Its totient is φ = 25823350548.

The previous prime is 25823350529. The next prime is 25823350571. The reversal of 25823350549 is 94505332852.

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., 17358062500 + 8465288049 = 131750^2 + 92007^2 .

It is a cyclic number.

It is not a de Polignac number, because 25823350549 - 2¹¹ = 25823348501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25823350499 and 25823350508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25823350529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12911675274 + 12911675275.

It is an arithmetic number, because the mean of its divisors is an integer number (12911675275).

Almost surely, 2^25823350549 is an apocalyptic number.

It is an amenable number.

25823350549 is a deficient number, since it is larger than the sum of its proper divisors (1).

25823350549 is an equidigital number, since it uses as much as digits as its factorization.

25823350549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 25823350549 in words is "twenty-five billion, eight hundred twenty-three million, three hundred fifty thousand, five hundred forty-nine".