518225540 has 48 divisors (see below), whose sum is σ = 1260803712. Its totient is φ = 175239936.

The previous prime is 518225531. The next prime is 518225557. The reversal of 518225540 is 45522815.

It is a super-3 number, since 3×518225540³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 518225497 and 518225506.

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 15 ways as a sum of consecutive naturals, for example, 15134 + ... + 35573.

It is an arithmetic number, because the mean of its divisors is an integer number (26266744).

Almost surely, 2^518225540 is an apocalyptic number.

It is an amenable number.

518225540 is an abundant number, since it is smaller than the sum of its proper divisors (742578172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518225540 is a wasteful number, since it uses less digits than its factorization.

518225540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50796 (or 50794 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 518225540 is about 22764.5676435991. The cubic root of 518225540 is about 803.2294148084.

The spelling of 518225540 in words is "five hundred eighteen million, two hundred twenty-five thousand, five hundred forty".