25755470664 has 128 divisors (see below), whose sum is σ = 81293414400. Its totient is φ = 6605015040.

The previous prime is 25755470617. The next prime is 25755470683. The reversal of 25755470664 is 46607455752.

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 31 ways as a sum of consecutive naturals, for example, 57784 + ... + 234200.

It is an arithmetic number, because the mean of its divisors is an integer number (635104800).

Almost surely, 2^25755470664 is an apocalyptic number.

25755470664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25755470664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40646707200).

25755470664 is an abundant number, since it is smaller than the sum of its proper divisors (55537943736).

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

25755470664 is a wasteful number, since it uses less digits than its factorization.

25755470664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176523 (or 176519 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 51.

The spelling of 25755470664 in words is "twenty-five billion, seven hundred fifty-five million, four hundred seventy thousand, six hundred sixty-four".