25270861782767 has 4 divisors (see below), whose sum is σ = 25272002238240. Its totient is φ = 25269721327296.

The previous prime is 25270861782757. The next prime is 25270861782773. The reversal of 25270861782767 is 76728716807252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25270861782767 - 2⁶ = 25270861782703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25270861782697 and 25270861782706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25270861782757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570194498 + ... + 570238815.

It is an arithmetic number, because the mean of its divisors is an integer number (6318000559560).

Almost surely, 2^{25270861782767} is an apocalyptic number.

25270861782767 is a deficient number, since it is larger than the sum of its proper divisors (1140455473).

25270861782767 is a wasteful number, since it uses less digits than its factorization.

25270861782767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140455472.

The product of its (nonzero) digits is 221276160, while the sum is 68.

The spelling of 25270861782767 in words is "twenty-five trillion, two hundred seventy billion, eight hundred sixty-one million, seven hundred eighty-two thousand, seven hundred sixty-seven".