25764163280 has 40 divisors (see below), whose sum is σ = 59920977312. Its totient is φ = 10302345344.

The previous prime is 25764163279. The next prime is 25764163291. The reversal of 25764163280 is 8236146752.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 205967 + ... + 306513.

Almost surely, 2^25764163280 is an apocalyptic number.

25764163280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25764163280 is an abundant number, since it is smaller than the sum of its proper divisors (34156814032).

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

25764163280 is a wasteful number, since it uses less digits than its factorization.

25764163280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103763 (or 103757 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 25764163280 in words is "twenty-five billion, seven hundred sixty-four million, one hundred sixty-three thousand, two hundred eighty".