5215425511 has 4 divisors (see below), whose sum is σ = 5395267800. Its totient is φ = 5035583224.

The previous prime is 5215425469. The next prime is 5215425521. The reversal of 5215425511 is 1155245125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5215425511 is a prime.

It is a super-2 number, since 2×5215425511² = 54401326521579222242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215425521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89921101 + ... + 89921158.

It is an arithmetic number, because the mean of its divisors is an integer number (1348816950).

Almost surely, 2^5215425511 is an apocalyptic number.

5215425511 is a deficient number, since it is larger than the sum of its proper divisors (179842289).

5215425511 is a wasteful number, since it uses less digits than its factorization.

5215425511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179842288.

The product of its digits is 10000, while the sum is 31.

The square root of 5215425511 is about 72217.9029811860. The cubic root of 5215425511 is about 1734.1896196379.

The spelling of 5215425511 in words is "five billion, two hundred fifteen million, four hundred twenty-five thousand, five hundred eleven".