525149664 has 96 divisors (see below), whose sum is σ = 1562762880. Its totient is φ = 153073152.

The previous prime is 525149629. The next prime is 525149693. The reversal of 525149664 is 466941525.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12639 + ... + 34785.

It is an arithmetic number, because the mean of its divisors is an integer number (16278780).

Almost surely, 2^525149664 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 525149664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781381440).

525149664 is an abundant number, since it is smaller than the sum of its proper divisors (1037613216).

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

525149664 is a wasteful number, since it uses less digits than its factorization.

525149664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22192 (or 22184 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 525149664 is about 22916.1441782862. The cubic root of 525149664 is about 806.7909735655.

The spelling of 525149664 in words is "five hundred twenty-five million, one hundred forty-nine thousand, six hundred sixty-four".