525720384 has 168 divisors, whose sum is σ = 1797344640. Its totient is φ = 143649792.

The previous prime is 525720373. The next prime is 525720397. The reversal of 525720384 is 483027525.

525720384 is a `hidden beast` number, since 5 + 2 + 572 + 0 + 3 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89902 + ... + 95570.

It is an arithmetic number, because the mean of its divisors is an integer number (10698480).

Almost surely, 2^525720384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525720384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898672320).

525720384 is an abundant number, since it is smaller than the sum of its proper divisors (1271624256).

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

525720384 is a wasteful number, since it uses less digits than its factorization.

525720384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717 (or 5704 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 525720384 is about 22928.5931535278. The cubic root of 525720384 is about 807.0831347493.

The spelling of 525720384 in words is "five hundred twenty-five million, seven hundred twenty thousand, three hundred eighty-four".