25991764382 has 16 divisors (see below), whose sum is σ = 39340484352. Its totient is φ = 12878315520.

The previous prime is 25991764367. The next prime is 25991764411. The reversal of 25991764382 is 28346719952.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1684382 + ... + 1699742.

It is an arithmetic number, because the mean of its divisors is an integer number (2458780272).

Almost surely, 2^25991764382 is an apocalyptic number.

25991764382 is a deficient number, since it is larger than the sum of its proper divisors (13348719970).

25991764382 is a wasteful number, since it uses less digits than its factorization.

25991764382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22963.

The product of its digits is 6531840, while the sum is 56.

The spelling of 25991764382 in words is "twenty-five billion, nine hundred ninety-one million, seven hundred sixty-four thousand, three hundred eighty-two".