25906434743808 has 80 divisors (see below), whose sum is σ = 76684845940560. Its totient is φ = 8635478243328.

The previous prime is 25906434743803. The next prime is 25906434743869. The reversal of 25906434743808 is 80834743460952.

25906434743808 is a `hidden beast` number, since 2 + 5 + 90 + 6 + 43 + 474 + 38 + 0 + 8 = 666.

It is a super-2 number, since 2×25906434743808² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25906434743803) 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, 936995535 + ... + 937023182.

It is an arithmetic number, because the mean of its divisors is an integer number (958560574257).

Almost surely, 2^{25906434743808} is an apocalyptic number.

It is an amenable number.

25906434743808 is an abundant number, since it is smaller than the sum of its proper divisors (50778411196752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25906434743808 is an equidigital number, since it uses as much as digits as its factorization.

25906434743808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874018744 (or 1874018722 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 63.

The spelling of 25906434743808 in words is "twenty-five trillion, nine hundred six billion, four hundred thirty-four million, seven hundred forty-three thousand, eight hundred eight".