25442230049 has 2 divisors, whose sum is σ = 25442230050. Its totient is φ = 25442230048.

The previous prime is 25442230013. The next prime is 25442230139. The reversal of 25442230049 is 94003224452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25217440000 + 224790049 = 158800^2 + 14993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25442230049 is a prime.

It is not a weakly prime, because it can be changed into another prime (25442230349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12721115024 + 12721115025.

It is an arithmetic number, because the mean of its divisors is an integer number (12721115025).

Almost surely, 2^25442230049 is an apocalyptic number.

It is an amenable number.

25442230049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25442230049 is an equidigital number, since it uses as much as digits as its factorization.

25442230049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 25442230049 in words is "twenty-five billion, four hundred forty-two million, two hundred thirty thousand, forty-nine".