25735087881 has 16 divisors (see below), whose sum is σ = 38128622400. Its totient is φ = 17155570464.

The previous prime is 25735087843. The next prime is 25735087913. The reversal of 25735087881 is 18878053752.

25735087881 is a `hidden beast` number, since 2 + 57 + 3 + 508 + 7 + 8 + 81 = 666.

It is not a de Polignac number, because 25735087881 - 2⁹ = 25735087369 is a prime.

It is a super-2 number, since 2×25735087881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25735087801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610570 + ... + 651356.

It is an arithmetic number, because the mean of its divisors is an integer number (2383038900).

Almost surely, 2^25735087881 is an apocalyptic number.

It is an amenable number.

25735087881 is a deficient number, since it is larger than the sum of its proper divisors (12393534519).

25735087881 is a wasteful number, since it uses less digits than its factorization.

25735087881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64165 (or 64159 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 25735087881 in words is "twenty-five billion, seven hundred thirty-five million, eighty-seven thousand, eight hundred eighty-one".