525303630 has 80 divisors (see below), whose sum is σ = 1420683264. Its totient is φ = 139268160.

The previous prime is 525303629. The next prime is 525303637. The reversal of 525303630 is 36303525.

525303630 is a `hidden beast` number, since 5 + 25 + 3 + 0 + 3 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 525303594 and 525303603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525303637) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 144819 + ... + 148401.

Almost surely, 2^525303630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525303630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710341632).

525303630 is an abundant number, since it is smaller than the sum of its proper divisors (895379634).

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

525303630 is a wasteful number, since it uses less digits than its factorization.

525303630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783 (or 3774 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 525303630 is about 22919.5032668686. The cubic root of 525303630 is about 806.8698121963.

The spelling of 525303630 in words is "five hundred twenty-five million, three hundred three thousand, six hundred thirty".