25800378482 has 18 divisors (see below), whose sum is σ = 39462959277. Its totient is φ = 12650883336.

The previous prime is 25800378479. The next prime is 25800378493. The reversal of 25800378482 is 28487300852.

It can be written as a sum of positive squares in 2 ways, for example, as 24473160721 + 1327217761 = 156439^2 + 36431^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=113579.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 12038303 + ... + 12040445.

Almost surely, 2^25800378482 is an apocalyptic number.

25800378482 is a deficient number, since it is larger than the sum of its proper divisors (13662580795).

25800378482 is an frugal number, since it uses more digits than its factorization.

25800378482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394 (or 2198 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 25800378482 in words is "twenty-five billion, eight hundred million, three hundred seventy-eight thousand, four hundred eighty-two".