25789880677 has 4 divisors (see below), whose sum is σ = 28134415296. Its totient is φ = 23445346060.

The previous prime is 25789880593. The next prime is 25789880689. The reversal of 25789880677 is 77608898752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25789880677 - 2¹¹ = 25789878629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25789889677) 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, 1172267293 + ... + 1172267314.

It is an arithmetic number, because the mean of its divisors is an integer number (7033603824).

Almost surely, 2^25789880677 is an apocalyptic number.

It is an amenable number.

25789880677 is a deficient number, since it is larger than the sum of its proper divisors (2344534619).

25789880677 is a wasteful number, since it uses less digits than its factorization.

25789880677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344534618.

The product of its (nonzero) digits is 94832640, while the sum is 67.

The spelling of 25789880677 in words is "twenty-five billion, seven hundred eighty-nine million, eight hundred eighty thousand, six hundred seventy-seven".