525535920 has 360 divisors, whose sum is σ = 2187690336. Its totient is φ = 110702592.

The previous prime is 525535919. The next prime is 525535921. The reversal of 525535920 is 29535525.

525535920 is a `hidden beast` number, since 52 + 553 + 59 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (525535919) and next prime (525535921).

It is a tau number, because it is divible by the number of its divisors (360).

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

It is not an unprimeable number, because it can be changed into a prime (525535921) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 851452 + ... + 852068.

Almost surely, 2^525535920 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 525535920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093845168).

525535920 is an abundant number, since it is smaller than the sum of its proper divisors (1662154416).

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

525535920 is a wasteful number, since it uses less digits than its factorization.

525535920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 525535920 is about 22924.5702249791. The cubic root of 525535920 is about 806.9887276563.

The spelling of 525535920 in words is "five hundred twenty-five million, five hundred thirty-five thousand, nine hundred twenty".