25708725782 has 16 divisors (see below), whose sum is σ = 38764258512. Its totient is φ = 12787459200.

The previous prime is 25708725773. The next prime is 25708725803. The reversal of 25708725782 is 28752780752.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302378 + ... + 377954.

It is an arithmetic number, because the mean of its divisors is an integer number (2422766157).

Almost surely, 2^25708725782 is an apocalyptic number.

25708725782 is a deficient number, since it is larger than the sum of its proper divisors (13055532730).

25708725782 is a wasteful number, since it uses less digits than its factorization.

25708725782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76463.

The product of its (nonzero) digits is 4390400, while the sum is 53.

The spelling of 25708725782 in words is "twenty-five billion, seven hundred eight million, seven hundred twenty-five thousand, seven hundred eighty-two".