25620405299 has 2 divisors, whose sum is σ = 25620405300. Its totient is φ = 25620405298.

The previous prime is 25620405289. The next prime is 25620405313. The reversal of 25620405299 is 99250402652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25620405299 - 2¹² = 25620401203 is a prime.

It is not a weakly prime, because it can be changed into another prime (25620405289) 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, 12810202649 + 12810202650.

It is an arithmetic number, because the mean of its divisors is an integer number (12810202650).

Almost surely, 2^25620405299 is an apocalyptic number.

25620405299 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620405299 is an equidigital number, since it uses as much as digits as its factorization.

25620405299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 25620405299 in words is "twenty-five billion, six hundred twenty million, four hundred five thousand, two hundred ninety-nine".