25555835755 has 8 divisors (see below), whose sum is σ = 30812345424. Its totient is φ = 20347773600.

The previous prime is 25555835749. The next prime is 25555835771. The reversal of 25555835755 is 55753855552.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-25555835755 is a prime.

It is a super-2 number, since 2×25555835755² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25555835696 and 25555835705.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12110716 + ... + 12112825.

It is an arithmetic number, because the mean of its divisors is an integer number (3851543178).

Almost surely, 2^25555835755 is an apocalyptic number.

25555835755 is a deficient number, since it is larger than the sum of its proper divisors (5256509669).

25555835755 is a wasteful number, since it uses less digits than its factorization.

25555835755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24223757.

The product of its digits is 26250000, while the sum is 55.

The spelling of 25555835755 in words is "twenty-five billion, five hundred fifty-five million, eight hundred thirty-five thousand, seven hundred fifty-five".