525403700 has 72 divisors (see below), whose sum is σ = 1239967512. Its totient is φ = 192430080.

The previous prime is 525403693. The next prime is 525403709. The reversal of 525403700 is 7304525.

It can be written as a sum of positive squares in 12 ways, for example, as 3189796 + 522213904 = 1786^2 + 22852^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 525403700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525403709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58724 + ... + 67076.

It is an arithmetic number, because the mean of its divisors is an integer number (17221771).

Almost surely, 2^525403700 is an apocalyptic number.

525403700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525403700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619983756).

525403700 is an abundant number, since it is smaller than the sum of its proper divisors (714563812).

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

525403700 is a wasteful number, since it uses less digits than its factorization.

525403700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 525403700 is about 22921.6862381457. The cubic root of 525403700 is about 806.9210450013.

The spelling of 525403700 in words is "five hundred twenty-five million, four hundred three thousand, seven hundred".