525732440 has 48 divisors (see below), whose sum is σ = 1205895600. Its totient is φ = 206281088.

The previous prime is 525732401. The next prime is 525732443. The reversal of 525732440 is 44237525.

It is a junction number, because it is equal to n+sod(n) for n = 525732397 and 525732406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525732443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110021 + ... + 114699.

It is an arithmetic number, because the mean of its divisors is an integer number (25122825).

Almost surely, 2^525732440 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 525732440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602947800).

525732440 is an abundant number, since it is smaller than the sum of its proper divisors (680163160).

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

525732440 is a wasteful number, since it uses less digits than its factorization.

525732440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796 (or 4739 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 525732440 is about 22928.8560551982. The cubic root of 525732440 is about 807.0893041378.

Adding to 525732440 its reverse (44237525), we get a palindrome (569969965).

The spelling of 525732440 in words is "five hundred twenty-five million, seven hundred thirty-two thousand, four hundred forty".