25667981079 has 32 divisors (see below), whose sum is σ = 38558951424. Its totient is φ = 15082494720.

The previous prime is 25667981041. The next prime is 25667981111. The reversal of 25667981079 is 97018976652.

It is not a de Polignac number, because 25667981079 - 2¹³ = 25667972887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25667981579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95619 + ... + 245924.

It is an arithmetic number, because the mean of its divisors is an integer number (1204967232).

Almost surely, 2^25667981079 is an apocalyptic number.

25667981079 is a deficient number, since it is larger than the sum of its proper divisors (12890970345).

25667981079 is a wasteful number, since it uses less digits than its factorization.

25667981079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341647.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 25667981079 in words is "twenty-five billion, six hundred sixty-seven million, nine hundred eighty-one thousand, seventy-nine".