25809063747136 has 56 divisors (see below), whose sum is σ = 52904110705664. Its totient is φ = 12479479280640.

The previous prime is 25809063747127. The next prime is 25809063747163. The reversal of 25809063747136 is 63174736090852.

It is a happy number.

It is a super-2 number, since 2×25809063747136² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1747605 + ... + 7394068.

It is a 1-persistent number, because it is pandigital, but 2⋅25809063747136 = 51618127494272 is not.

Almost surely, 2^{25809063747136} is an apocalyptic number.

It is an amenable number.

25809063747136 is an abundant number, since it is smaller than the sum of its proper divisors (27095046958528).

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

25809063747136 is a wasteful number, since it uses less digits than its factorization.

25809063747136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9143139 (or 9143129 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 25809063747136 in words is "twenty-five trillion, eight hundred nine billion, sixty-three million, seven hundred forty-seven thousand, one hundred thirty-six".