25676257798734 has 16 divisors (see below), whose sum is σ = 51543417145680. Its totient is φ = 8526935674880.

The previous prime is 25676257798621. The next prime is 25676257798739. The reversal of 25676257798734 is 43789775267652.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25676257798734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25676257798739) 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 7 ways as a sum of consecutive naturals, for example, 7954229427 + ... + 7954232654.

It is an arithmetic number, because the mean of its divisors is an integer number (3221463571605).

Almost surely, 2^{25676257798734} is an apocalyptic number.

25676257798734 is an abundant number, since it is smaller than the sum of its proper divisors (25867159346946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25676257798734 is a wasteful number, since it uses less digits than its factorization.

25676257798734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15908462355.

The product of its digits is 7468070400, while the sum is 78.

The spelling of 25676257798734 in words is "twenty-five trillion, six hundred seventy-six billion, two hundred fifty-seven million, seven hundred ninety-eight thousand, seven hundred thirty-four".