55555525555 has 4 divisors (see below), whose sum is σ = 66666630672. Its totient is φ = 44444420440.

The previous prime is 55555525549. The next prime is 55555525637. The reversal of 55555525555 is 55552555555.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-55555525555 is a prime.

It is a super-3 number, since 3×55555525555³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555552551 + ... + 5555552560.

It is an arithmetic number, because the mean of its divisors is an integer number (16666657668).

Almost surely, 2^55555525555 is an apocalyptic number.

55555525555 is a deficient number, since it is larger than the sum of its proper divisors (11111105117).

55555525555 is a wasteful number, since it uses less digits than its factorization.

55555525555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111105116.

The product of its digits is 19531250, while the sum is 52.

The spelling of 55555525555 in words is "fifty-five billion, five hundred fifty-five million, five hundred twenty-five thousand, five hundred fifty-five".