25994686402206 has 12 divisors (see below), whose sum is σ = 56321820538152. Its totient is φ = 8664895467396.

The previous prime is 25994686402189. The next prime is 25994686402211. The reversal of 25994686402206 is 60220468649952.

25994686402206 is a `hidden beast` number, since 2 + 5 + 99 + 46 + 86 + 402 + 20 + 6 = 666.

It is a super-2 number, since 2×25994686402206² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722074622266 + ... + 722074622301.

It is an arithmetic number, because the mean of its divisors is an integer number (4693485044846).

Almost surely, 2^{25994686402206} is an apocalyptic number.

25994686402206 is an abundant number, since it is smaller than the sum of its proper divisors (30327134135946).

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

25994686402206 is a wasteful number, since it uses less digits than its factorization.

25994686402206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444149244575 (or 1444149244572 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 63.

The spelling of 25994686402206 in words is "twenty-five trillion, nine hundred ninety-four billion, six hundred eighty-six million, four hundred two thousand, two hundred six".