25764720448 has 28 divisors (see below), whose sum is σ = 51827244580. Its totient is φ = 12705887232.

The previous prime is 25764720433. The next prime is 25764720479. The reversal of 25764720448 is 84402746752.

It can be written as a sum of positive squares in 2 ways, for example, as 12806996224 + 12957724224 = 113168^2 + 113832^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752683 + ... + 2762026.

Almost surely, 2^25764720448 is an apocalyptic number.

It is an amenable number.

25764720448 is an abundant number, since it is smaller than the sum of its proper divisors (26062524132).

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

25764720448 is an equidigital number, since it uses as much as digits as its factorization.

25764720448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514794 (or 5514784 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 49.

The spelling of 25764720448 in words is "twenty-five billion, seven hundred sixty-four million, seven hundred twenty thousand, four hundred forty-eight".