25764720488 has 64 divisors (see below), whose sum is σ = 52836537600. Its totient is φ = 11707315200.

The previous prime is 25764720479. The next prime is 25764720493. The reversal of 25764720488 is 88402746752.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1767293 + ... + 1781811.

It is an arithmetic number, because the mean of its divisors is an integer number (825570900).

Almost surely, 2^25764720488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25764720488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26418268800).

25764720488 is an abundant number, since it is smaller than the sum of its proper divisors (27071817112).

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

25764720488 is a wasteful number, since it uses less digits than its factorization.

25764720488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14802 (or 14798 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 25764720488 in words is "twenty-five billion, seven hundred sixty-four million, seven hundred twenty thousand, four hundred eighty-eight".