525720030 has 64 divisors (see below), whose sum is σ = 1387051776. Its totient is φ = 126464000.

The previous prime is 525720029. The next prime is 525720043. The reversal of 525720030 is 30027525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37150 + ... + 49310.

It is an arithmetic number, because the mean of its divisors is an integer number (21672684).

Almost surely, 2^525720030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525720030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693525888).

525720030 is an abundant number, since it is smaller than the sum of its proper divisors (861331746).

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

525720030 is a wasteful number, since it uses less digits than its factorization.

525720030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12313.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 525720030 is about 22928.5854339076. The cubic root of 525720030 is about 807.0829535962.

Adding to 525720030 its reverse (30027525), we get a palindrome (555747555).

The spelling of 525720030 in words is "five hundred twenty-five million, seven hundred twenty thousand, thirty".