25280005505278 has 8 divisors (see below), whose sum is σ = 37926723346272. Its totient is φ = 12637764389856.

The previous prime is 25280005505213. The next prime is 25280005505281. The reversal of 25280005505278 is 87250550008252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119167275 + ... + 1119189862.

It is an arithmetic number, because the mean of its divisors is an integer number (4740840418284).

Almost surely, 2^{25280005505278} is an apocalyptic number.

25280005505278 is a deficient number, since it is larger than the sum of its proper divisors (12646717840994).

25280005505278 is a wasteful number, since it uses less digits than its factorization.

25280005505278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238362786.

The product of its (nonzero) digits is 2240000, while the sum is 49.

The spelling of 25280005505278 in words is "twenty-five trillion, two hundred eighty billion, five million, five hundred five thousand, two hundred seventy-eight".