525231564 has 96 divisors (see below), whose sum is σ = 1445934336. Its totient is φ = 146292480.

The previous prime is 525231563. The next prime is 525231583. The reversal of 525231564 is 465132525.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (525231563) 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 31 ways as a sum of consecutive naturals, for example, 526314 + ... + 527310.

It is an arithmetic number, because the mean of its divisors is an integer number (15061816).

Almost surely, 2^525231564 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 525231564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722967168).

525231564 is an abundant number, since it is smaller than the sum of its proper divisors (920702772).

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

525231564 is a wasteful number, since it uses less digits than its factorization.

525231564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1333 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 525231564 is about 22917.9310584529. The cubic root of 525231564 is about 806.8329125596.

The spelling of 525231564 in words is "five hundred twenty-five million, two hundred thirty-one thousand, five hundred sixty-four".