7218425132 has 6 divisors (see below), whose sum is σ = 12632243988. Its totient is φ = 3609212564.

The previous prime is 7218425009. The next prime is 7218425141. The reversal of 7218425132 is 2315248127.

It is a super-2 number, since 2×7218425132² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7218425092 and 7218425101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902303138 + ... + 902303145.

It is an arithmetic number, because the mean of its divisors is an integer number (2105373998).

Almost surely, 2^7218425132 is an apocalyptic number.

It is an amenable number.

7218425132 is a deficient number, since it is larger than the sum of its proper divisors (5413818856).

7218425132 is a wasteful number, since it uses less digits than its factorization.

7218425132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804606287 (or 1804606285 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 7218425132 is about 84961.3155029982. The cubic root of 7218425132 is about 1932.6245207272.

The spelling of 7218425132 in words is "seven billion, two hundred eighteen million, four hundred twenty-five thousand, one hundred thirty-two".