25534148881 has 8 divisors (see below), whose sum is σ = 25567977600. Its totient is φ = 25500341712.

The previous prime is 25534148873. The next prime is 25534148989. The reversal of 25534148881 is 18884143552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25534148881 - 2³ = 25534148873 is a prime.

It is a super-2 number, since 2×25534148881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25534148821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4794286 + ... + 4799608.

It is an arithmetic number, because the mean of its divisors is an integer number (3195997200).

Almost surely, 2^25534148881 is an apocalyptic number.

It is an amenable number.

25534148881 is a deficient number, since it is larger than the sum of its proper divisors (33828719).

25534148881 is a wasteful number, since it uses less digits than its factorization.

25534148881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775.

The product of its digits is 1228800, while the sum is 49.

The spelling of 25534148881 in words is "twenty-five billion, five hundred thirty-four million, one hundred forty-eight thousand, eight hundred eighty-one".