25604674677 has 12 divisors (see below), whose sum is σ = 37005893964. Its totient is φ = 17059922880.

The previous prime is 25604674639. The next prime is 25604674717. The reversal of 25604674677 is 77647640652.

25604674677 is a `hidden beast` number, since 2 + 560 + 4 + 6 + 7 + 4 + 6 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11443436676 + 14161238001 = 106974^2 + 119001^2 .

It is not a de Polignac number, because 25604674677 - 2¹⁶ = 25604609141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25604670677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 805224 + ... + 836417.

It is an arithmetic number, because the mean of its divisors is an integer number (3083824497).

Almost surely, 2^25604674677 is an apocalyptic number.

It is an amenable number.

25604674677 is a deficient number, since it is larger than the sum of its proper divisors (11401219287).

25604674677 is a wasteful number, since it uses less digits than its factorization.

25604674677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643380 (or 1643377 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 25604674677 in words is "twenty-five billion, six hundred four million, six hundred seventy-four thousand, six hundred seventy-seven".