525414220 has 48 divisors (see below), whose sum is σ = 1163635200. Its totient is φ = 198728640.

The previous prime is 525414217. The next prime is 525414233. The reversal of 525414220 is 22414525.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279885 + ... + 281755.

It is an arithmetic number, because the mean of its divisors is an integer number (24242400).

Almost surely, 2^525414220 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 525414220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581817600).

525414220 is an abundant number, since it is smaller than the sum of its proper divisors (638220980).

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

525414220 is a wasteful number, since it uses less digits than its factorization.

525414220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 525414220 is about 22921.9157140061. The cubic root of 525414220 is about 806.9264305444.

Adding to 525414220 its reverse (22414525), we get a palindrome (547828745).

The spelling of 525414220 in words is "five hundred twenty-five million, four hundred fourteen thousand, two hundred twenty".