525283638 has 16 divisors (see below), whose sum is σ = 1146073536. Its totient is φ = 159176840.

The previous prime is 525283621. The next prime is 525283639. The reversal of 525283638 is 836382525.

It is a self number, because there is not a number n which added to its sum of digits gives 525283638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525283639) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3979356 + ... + 3979487.

It is an arithmetic number, because the mean of its divisors is an integer number (71629596).

Almost surely, 2^525283638 is an apocalyptic number.

525283638 is an abundant number, since it is smaller than the sum of its proper divisors (620789898).

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

525283638 is a wasteful number, since it uses less digits than its factorization.

525283638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958859.

The product of its digits is 345600, while the sum is 42.

The square root of 525283638 is about 22919.0671276123. The cubic root of 525283638 is about 806.8595761188.

The spelling of 525283638 in words is "five hundred twenty-five million, two hundred eighty-three thousand, six hundred thirty-eight".