25229822749 has 2 divisors, whose sum is σ = 25229822750. Its totient is φ = 25229822748.

The previous prime is 25229822743. The next prime is 25229822753. The reversal of 25229822749 is 94722892252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22146797124 + 3083025625 = 148818^2 + 55525^2 .

It is a cyclic number.

It is not a de Polignac number, because 25229822749 - 2³ = 25229822741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25229822696 and 25229822705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25229822741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12614911374 + 12614911375.

It is an arithmetic number, because the mean of its divisors is an integer number (12614911375).

Almost surely, 2^25229822749 is an apocalyptic number.

It is an amenable number.

25229822749 is a deficient number, since it is larger than the sum of its proper divisors (1).

25229822749 is an equidigital number, since it uses as much as digits as its factorization.

25229822749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The spelling of 25229822749 in words is "twenty-five billion, two hundred twenty-nine million, eight hundred twenty-two thousand, seven hundred forty-nine".