525283380 has 144 divisors (see below), whose sum is σ = 1709809920. Its totient is φ = 135209088.

The previous prime is 525283379. The next prime is 525283393. The reversal of 525283380 is 83382525.

525283380 is a `hidden beast` number, since 52 + 528 + 3 + 3 + 80 = 666.

It is a super-3 number, since 3×525283380³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139077 + ... + 142803.

It is an arithmetic number, because the mean of its divisors is an integer number (11873680).

Almost surely, 2^525283380 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 525283380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (854904960).

525283380 is an abundant number, since it is smaller than the sum of its proper divisors (1184526540).

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

525283380 is a wasteful number, since it uses less digits than its factorization.

525283380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3766 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 525283380 is about 22919.0614991103. The cubic root of 525283380 is about 806.8594440189.

The spelling of 525283380 in words is "five hundred twenty-five million, two hundred eighty-three thousand, three hundred eighty".