525500818 has 4 divisors (see below), whose sum is σ = 788251230. Its totient is φ = 262750408.

The previous prime is 525500779. The next prime is 525500819. The reversal of 525500818 is 818005525.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 333318049 + 192182769 = 18257^2 + 13863^2 .

It is a super-2 number, since 2×525500818² = 552302219437338248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525500819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131375203 + ... + 131375206.

Almost surely, 2^525500818 is an apocalyptic number.

525500818 is a deficient number, since it is larger than the sum of its proper divisors (262750412).

525500818 is a wasteful number, since it uses less digits than its factorization.

525500818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262750411.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 525500818 is about 22923.8046144177. The cubic root of 525500818 is about 806.9707602520.

The spelling of 525500818 in words is "five hundred twenty-five million, five hundred thousand, eight hundred eighteen".