525660330 has 64 divisors (see below), whose sum is σ = 1367130240. Its totient is φ = 128583936.

The previous prime is 525660329. The next prime is 525660341. The reversal of 525660330 is 33066525.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 59436 + ... + 67704.

It is an arithmetic number, because the mean of its divisors is an integer number (21361410).

Almost surely, 2^525660330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525660330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683565120).

525660330 is an abundant number, since it is smaller than the sum of its proper divisors (841469910).

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

525660330 is a wasteful number, since it uses less digits than its factorization.

525660330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 525660330 is about 22927.2835285823. The cubic root of 525660330 is about 807.0524020520.

The spelling of 525660330 in words is "five hundred twenty-five million, six hundred sixty thousand, three hundred thirty".