525089664 has 144 divisors (see below), whose sum is σ = 1661292360. Its totient is φ = 159075840.

The previous prime is 525089611. The next prime is 525089671. The reversal of 525089664 is 466980525.

525089664 is a `hidden beast` number, since 52 + 508 + 96 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 137509 + ... + 141275.

Almost surely, 2^525089664 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 525089664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830646180).

525089664 is an abundant number, since it is smaller than the sum of its proper divisors (1136202696).

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

525089664 is a wasteful number, since it uses less digits than its factorization.

525089664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 525089664 is about 22914.8350201349. The cubic root of 525089664 is about 806.7602462602.

The spelling of 525089664 in words is "five hundred twenty-five million, eighty-nine thousand, six hundred sixty-four".