25677657607 has 16 divisors (see below), whose sum is σ = 29804654592. Its totient is φ = 21665809440.

The previous prime is 25677657581. The next prime is 25677657611. The reversal of 25677657607 is 70675677652.

It is a cyclic number.

It is not a de Polignac number, because 25677657607 - 2³¹ = 23530173959 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 (25677657617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681882 + ... + 718552.

It is an arithmetic number, because the mean of its divisors is an integer number (1862790912).

Almost surely, 2^25677657607 is an apocalyptic number.

25677657607 is a deficient number, since it is larger than the sum of its proper divisors (4126996985).

25677657607 is a wasteful number, since it uses less digits than its factorization.

25677657607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38238.

The product of its (nonzero) digits is 25930800, while the sum is 58.

The spelling of 25677657607 in words is "twenty-five billion, six hundred seventy-seven million, six hundred fifty-seven thousand, six hundred seven".