25648773888 has 54 divisors (see below), whose sum is σ = 68274957324. Its totient is φ = 8548111872.

The previous prime is 25648773881. The next prime is 25648773929. The reversal of 25648773888 is 88837784652.

It is not an unprimeable number, because it can be changed into a prime (25648773881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4435383 + ... + 4441161.

Almost surely, 2^25648773888 is an apocalyptic number.

It is an amenable number.

25648773888 is an abundant number, since it is smaller than the sum of its proper divisors (42626183436).

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

25648773888 is an frugal number, since it uses more digits than its factorization.

25648773888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11577 (or 5784 counting only the distinct ones).

The product of its digits is 144506880, while the sum is 66.

The spelling of 25648773888 in words is "twenty-five billion, six hundred forty-eight million, seven hundred seventy-three thousand, eight hundred eighty-eight".