7125555217 has 8 divisors (see below), whose sum is σ = 7775616672. Its totient is φ = 6475874400.

The previous prime is 7125555211. The next prime is 7125555221.

It is a happy number.

7125555217 is nontrivially palindromic in base 10.

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 7125555217 - 2¹⁵ = 7125522449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7125555217.

It is not an unprimeable number, because it can be changed into a prime (7125555211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55284 + ... + 131557.

It is an arithmetic number, because the mean of its divisors is an integer number (971952084).

Almost surely, 2^7125555217 is an apocalyptic number.

It is an amenable number.

7125555217 is a deficient number, since it is larger than the sum of its proper divisors (650061455).

7125555217 is a wasteful number, since it uses less digits than its factorization.

7125555217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190319.

The product of its digits is 122500, while the sum is 40.

The square root of 7125555217 is about 84413.0038382713. The cubic root of 7125555217 is about 1924.3005468724.

The spelling of 7125555217 in words is "seven billion, one hundred twenty-five million, five hundred fifty-five thousand, two hundred seventeen".