25545650368 has 56 divisors (see below), whose sum is σ = 58727575712. Its totient is φ = 10798147584.

The previous prime is 25545650353. The next prime is 25545650401. The reversal of 25545650368 is 86305654552.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357855 + ... + 423262.

Almost surely, 2^25545650368 is an apocalyptic number.

25545650368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25545650368 is an abundant number, since it is smaller than the sum of its proper divisors (33181925344).

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

25545650368 is an equidigital number, since it uses as much as digits as its factorization.

25545650368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781209 (or 781199 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 49.

The spelling of 25545650368 in words is "twenty-five billion, five hundred forty-five million, six hundred fifty thousand, three hundred sixty-eight".