25285015879 has 2 divisors, whose sum is σ = 25285015880. Its totient is φ = 25285015878.

The previous prime is 25285015831. The next prime is 25285015883. The reversal of 25285015879 is 97851058252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25285015879 - 2¹⁵ = 25284983111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25285015979) 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, 12642507939 + 12642507940.

It is an arithmetic number, because the mean of its divisors is an integer number (12642507940).

Almost surely, 2^25285015879 is an apocalyptic number.

25285015879 is a deficient number, since it is larger than the sum of its proper divisors (1).

25285015879 is an equidigital number, since it uses as much as digits as its factorization.

25285015879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016000, while the sum is 52.

The spelling of 25285015879 in words is "twenty-five billion, two hundred eighty-five million, fifteen thousand, eight hundred seventy-nine".