7125155155 has 4 divisors (see below), whose sum is σ = 8550186192. Its totient is φ = 5700124120.

The previous prime is 7125155143. The next prime is 7125155161. The reversal of 7125155155 is 5515515217.

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

It is not a de Polignac number, because 7125155155 - 2¹¹ = 7125153107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 712515511 + ... + 712515520.

It is an arithmetic number, because the mean of its divisors is an integer number (2137546548).

Almost surely, 2^7125155155 is an apocalyptic number.

7125155155 is a deficient number, since it is larger than the sum of its proper divisors (1425031037).

7125155155 is a wasteful number, since it uses less digits than its factorization.

7125155155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425031036.

The product of its digits is 43750, while the sum is 37.

The square root of 7125155155 is about 84410.6341345686. The cubic root of 7125155155 is about 1924.2645331205.

The spelling of 7125155155 in words is "seven billion, one hundred twenty-five million, one hundred fifty-five thousand, one hundred fifty-five".