25285009699 has 2 divisors, whose sum is σ = 25285009700. Its totient is φ = 25285009698.

The previous prime is 25285009667. The next prime is 25285009741. The reversal of 25285009699 is 99690058252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25285009699 - 2⁵ = 25285009667 is a prime.

It is not a weakly prime, because it can be changed into another prime (25285009999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12642504849 + 12642504850.

It is an arithmetic number, because the mean of its divisors is an integer number (12642504850).

Almost surely, 2^25285009699 is an apocalyptic number.

25285009699 is a deficient number, since it is larger than the sum of its proper divisors (1).

25285009699 is an equidigital number, since it uses as much as digits as its factorization.

25285009699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 25285009699 in words is "twenty-five billion, two hundred eighty-five million, nine thousand, six hundred ninety-nine".