25717856463 has 48 divisors (see below), whose sum is σ = 41327080704. Its totient is φ = 15304343040.

The previous prime is 25717856459. The next prime is 25717856503. The reversal of 25717856463 is 36465871752.

25717856463 is a `hidden beast` number, since 2 + 5 + 7 + 1 + 78 + 564 + 6 + 3 = 666.

It is not a de Polignac number, because 25717856463 - 2² = 25717856459 is a prime.

It is a super-2 number, since 2×25717856463² (a number of 22 digits) contains 22 as substring.

Its product of digits (8467200) is a multiple of the sum of its prime factors (5376).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25717856063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9548545 + ... + 9551237.

It is an arithmetic number, because the mean of its divisors is an integer number (860980848).

Almost surely, 2^25717856463 is an apocalyptic number.

25717856463 is a deficient number, since it is larger than the sum of its proper divisors (15609224241).

25717856463 is a wasteful number, since it uses less digits than its factorization.

25717856463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5373 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 25717856463 in words is "twenty-five billion, seven hundred seventeen million, eight hundred fifty-six thousand, four hundred sixty-three".