520250000 has 70 divisors (see below), whose sum is σ = 1260569802. Its totient is φ = 208000000.

The previous prime is 520249981. The next prime is 520250021. The reversal of 520250000 is 52025.

It can be written as a sum of positive squares in 7 ways, for example, as 515653264 + 4596736 = 22708^2 + 2144^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 248960 + ... + 251040.

Almost surely, 2^520250000 is an apocalyptic number.

520250000 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 520250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630284901).

520250000 is an abundant number, since it is smaller than the sum of its proper divisors (740319802).

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

520250000 is an frugal number, since it uses more digits than its factorization.

520250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 520250000 is about 22808.9894559141. The cubic root of 520250000 is about 804.2740004865.

Multiplying 520250000 by its reverse (52025), we get a square (27066006250000 = 5202500²).

520250000 divided by its reverse (52025) gives a 4-th power (10000 = 10⁴).

The spelling of 520250000 in words is "five hundred twenty million, two hundred fifty thousand".