525315280 has 120 divisors (see below), whose sum is σ = 1470073320. Its totient is φ = 173859840.

The previous prime is 525315269. The next prime is 525315281. The reversal of 525315280 is 82513525.

It can be written as a sum of positive squares in 4 ways, for example, as 37258816 + 488056464 = 6104^2 + 22092^2 .

It is a super-3 number, since 3×525315280³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525315281) 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 23 ways as a sum of consecutive naturals, for example, 111370 + ... + 115990.

It is an arithmetic number, because the mean of its divisors is an integer number (12250611).

Almost surely, 2^525315280 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 525315280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735036660).

525315280 is an abundant number, since it is smaller than the sum of its proper divisors (944758040).

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

525315280 is a wasteful number, since it uses less digits than its factorization.

525315280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677 (or 4664 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 525315280 is about 22919.7574158192. The cubic root of 525315280 is about 806.8757769776.

The spelling of 525315280 in words is "five hundred twenty-five million, three hundred fifteen thousand, two hundred eighty".