520323025 has 6 divisors (see below), whose sum is σ = 645200582. Its totient is φ = 416258400.

The previous prime is 520323019. The next prime is 520323031.

520323025 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (520323019) and next prime (520323031).

It can be written as a sum of positive squares in 3 ways, for example, as 172239376 + 348083649 = 13124^2 + 18657^2 .

It is not a de Polignac number, because 520323025 - 2¹⁹ = 519798737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520322987 and 520323005.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10406436 + ... + 10406485.

Almost surely, 2^520323025 is an apocalyptic number.

It is an amenable number.

520323025 is a deficient number, since it is larger than the sum of its proper divisors (124877557).

520323025 is a wasteful number, since it uses less digits than its factorization.

520323025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20812931 (or 20812926 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 520323025 is about 22810.5901940305. The cubic root of 520323025 is about 804.3116294220.

The spelling of 520323025 in words is "five hundred twenty million, three hundred twenty-three thousand, twenty-five".