25656680463 has 8 divisors (see below), whose sum is σ = 34210392576. Its totient is φ = 17103711000.

The previous prime is 25656680461. The next prime is 25656680519. The reversal of 25656680463 is 36408665652.

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

It is not a de Polignac number, because 25656680463 - 2¹ = 25656680461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25656680461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99313 + ... + 247338.

It is an arithmetic number, because the mean of its divisors is an integer number (4276299072).

Almost surely, 2^25656680463 is an apocalyptic number.

25656680463 is a deficient number, since it is larger than the sum of its proper divisors (8553712113).

25656680463 is a wasteful number, since it uses less digits than its factorization.

25656680463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371325.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 25656680463 in words is "twenty-five billion, six hundred fifty-six million, six hundred eighty thousand, four hundred sixty-three".