25676964641 has 8 divisors (see below), whose sum is σ = 26851234560. Its totient is φ = 24507518112.

The previous prime is 25676964631. The next prime is 25676964661. The reversal of 25676964641 is 14646967652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25676964641 - 2¹⁸ = 25676702497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25676964631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194956 + ... + 1216253.

It is an arithmetic number, because the mean of its divisors is an integer number (3356404320).

Almost surely, 2^25676964641 is an apocalyptic number.

It is an amenable number.

25676964641 is a deficient number, since it is larger than the sum of its proper divisors (1174269919).

25676964641 is a wasteful number, since it uses less digits than its factorization.

25676964641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411695.

The product of its digits is 13063680, while the sum is 56.

The spelling of 25676964641 in words is "twenty-five billion, six hundred seventy-six million, nine hundred sixty-four thousand, six hundred forty-one".