25740745216 has 80 divisors (see below), whose sum is σ = 56005567200. Its totient is φ = 11772407808.

The previous prime is 25740745207. The next prime is 25740745223. The reversal of 25740745216 is 61254704752.

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, 236491 + ... + 327733.

It is an arithmetic number, because the mean of its divisors is an integer number (700069590).

Almost surely, 2^25740745216 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 25740745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28002783600).

25740745216 is an abundant number, since it is smaller than the sum of its proper divisors (30264821984).

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

25740745216 is an equidigital number, since it uses as much as digits as its factorization.

25740745216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91309 (or 91293 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 25740745216 in words is "twenty-five billion, seven hundred forty million, seven hundred forty-five thousand, two hundred sixteen".