25434393601 has 2 divisors, whose sum is σ = 25434393602. Its totient is φ = 25434393600.

The previous prime is 25434393547. The next prime is 25434393637. The reversal of 25434393601 is 10639343452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12740991376 + 12693402225 = 112876^2 + 112665^2 .

It is a cyclic number.

It is not a de Polignac number, because 25434393601 - 2⁷ = 25434393473 is a prime.

It is not a weakly prime, because it can be changed into another prime (25434393001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717196800 + 12717196801.

It is an arithmetic number, because the mean of its divisors is an integer number (12717196801).

Almost surely, 2^25434393601 is an apocalyptic number.

It is an amenable number.

25434393601 is a deficient number, since it is larger than the sum of its proper divisors (1).

25434393601 is an equidigital number, since it uses as much as digits as its factorization.

25434393601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 25434393601 in words is "twenty-five billion, four hundred thirty-four million, three hundred ninety-three thousand, six hundred one".