25673664777 has 16 divisors (see below), whose sum is σ = 34412938560. Its totient is φ = 17025285312.

The previous prime is 25673664769. The next prime is 25673664803. The reversal of 25673664777 is 77746637652.

It is not a de Polignac number, because 25673664777 - 2³ = 25673664769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25673664777.

It is not an unprimeable number, because it can be changed into a prime (25673664077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494163 + ... + 543639.

It is an arithmetic number, because the mean of its divisors is an integer number (2150808660).

Almost surely, 2^25673664777 is an apocalyptic number.

It is an amenable number.

25673664777 is a deficient number, since it is larger than the sum of its proper divisors (8739273783).

25673664777 is a wasteful number, since it uses less digits than its factorization.

25673664777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50392.

The product of its digits is 62233920, while the sum is 60.

The spelling of 25673664777 in words is "twenty-five billion, six hundred seventy-three million, six hundred sixty-four thousand, seven hundred seventy-seven".