525531664 has 30 divisors (see below), whose sum is σ = 1184458974. Its totient is φ = 225227520.

The previous prime is 525531641. The next prime is 525531689. The reversal of 525531664 is 466135525.

It can be written as a sum of positive squares in only one way, i.e., 470890000 + 54641664 = 21700^2 + 7392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 334377 + ... + 335944.

Almost surely, 2^525531664 is an apocalyptic number.

It is an amenable number.

525531664 is an abundant number, since it is smaller than the sum of its proper divisors (658927310).

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

525531664 is a wasteful number, since it uses less digits than its factorization.

525531664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670343 (or 670330 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 525531664 is about 22924.4773986235. The cubic root of 525531664 is about 806.9865492113.

The spelling of 525531664 in words is "five hundred twenty-five million, five hundred thirty-one thousand, six hundred sixty-four".