25381570816 has 36 divisors (see below), whose sum is σ = 57901712512. Its totient is φ = 10877815296.

The previous prime is 25381570807. The next prime is 25381570829. The reversal of 25381570816 is 61807518352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7080120 + ... + 7083703.

Almost surely, 2^25381570816 is an apocalyptic number.

It is an amenable number.

25381570816 is an abundant number, since it is smaller than the sum of its proper divisors (32520141696).

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

25381570816 is an equidigital number, since it uses as much as digits as its factorization.

25381570816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14163846 (or 14163832 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 25381570816 in words is "twenty-five billion, three hundred eighty-one million, five hundred seventy thousand, eight hundred sixteen".