525803838 has 32 divisors (see below), whose sum is σ = 1216325376. Its totient is φ = 148418688.

The previous prime is 525803821. The next prime is 525803867. The reversal of 525803838 is 838308525.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 525803838.

It is a congruent number.

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, 71931 + ... + 78902.

It is an arithmetic number, because the mean of its divisors is an integer number (38010168).

Almost surely, 2^525803838 is an apocalyptic number.

525803838 is an abundant number, since it is smaller than the sum of its proper divisors (690521538).

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

525803838 is a wasteful number, since it uses less digits than its factorization.

525803838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150928.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 525803838 is about 22930.4129487456. The cubic root of 525803838 is about 807.1258385352.

The spelling of 525803838 in words is "five hundred twenty-five million, eight hundred three thousand, eight hundred thirty-eight".