25055501111081 has 12 divisors (see below), whose sum is σ = 29146976134272. Its totient is φ = 21475568362248.

The previous prime is 25055501111051. The next prime is 25055501111111. The reversal of 25055501111081 is 18011110555052.

It is an interprime number because it is at equal distance from previous prime (25055501111051) and next prime (25055501111111).

It is a de Polignac number, because none of the positive numbers 2^k-25055501111081 is a prime.

It is a super-3 number, since 3×25055501111081³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25055501111051) 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 11 ways as a sum of consecutive naturals, for example, 4998125 + ... + 8665578.

It is an arithmetic number, because the mean of its divisors is an integer number (2428914677856).

Almost surely, 2^{25055501111081} is an apocalyptic number.

It is an amenable number.

25055501111081 is a deficient number, since it is larger than the sum of its proper divisors (4091475023191).

25055501111081 is a wasteful number, since it uses less digits than its factorization.

25055501111081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13701140 (or 13701133 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 35.

The spelling of 25055501111081 in words is "twenty-five trillion, fifty-five billion, five hundred one million, one hundred eleven thousand, eighty-one".