525005240 has 64 divisors (see below), whose sum is σ = 1203491520. Its totient is φ = 206080000.

The previous prime is 525005219. The next prime is 525005249. The reversal of 525005240 is 42500525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525005249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1138610 + ... + 1139070.

It is an arithmetic number, because the mean of its divisors is an integer number (18804555).

Almost surely, 2^525005240 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 525005240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601745760).

525005240 is an abundant number, since it is smaller than the sum of its proper divisors (678486280).

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

525005240 is a wasteful number, since it uses less digits than its factorization.

525005240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 525005240 is about 22912.9928206684. The cubic root of 525005240 is about 806.7170069291.

Adding to 525005240 its reverse (42500525), we get a palindrome (567505765).

The spelling of 525005240 in words is "five hundred twenty-five million, five thousand, two hundred forty".