505011025 has 6 divisors (see below), whose sum is σ = 626213702. Its totient is φ = 404008800.

The previous prime is 505011011. The next prime is 505011037. The reversal of 505011025 is 520110505.

It can be written as a sum of positive squares in 3 ways, for example, as 21538881 + 483472144 = 4641^2 + 21988^2 .

It is a de Polignac number, because none of the positive numbers 2^k-505011025 is a prime.

It is a super-2 number, since 2×505011025² = 510072270743101250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505010993 and 505011011.

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, 10100196 + ... + 10100245.

Almost surely, 2^505011025 is an apocalyptic number.

It is an amenable number.

505011025 is a deficient number, since it is larger than the sum of its proper divisors (121202677).

505011025 is a wasteful number, since it uses less digits than its factorization.

505011025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200451 (or 20200446 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 505011025 is about 22472.4503559358. The cubic root of 505011025 is about 796.3432192655.

The spelling of 505011025 in words is "five hundred five million, eleven thousand, twenty-five".