505001225 has 48 divisors (see below), whose sum is σ = 677849472. Its totient is φ = 372303360.

The previous prime is 505001213. The next prime is 505001239. The reversal of 505001225 is 522100505.

It is not a de Polignac number, because 505001225 - 2¹⁰ = 505000201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505001197 and 505001206.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2224562 + ... + 2224788.

It is an arithmetic number, because the mean of its divisors is an integer number (14121864).

Almost surely, 2^505001225 is an apocalyptic number.

It is an amenable number.

505001225 is a deficient number, since it is larger than the sum of its proper divisors (172848247).

505001225 is a wasteful number, since it uses less digits than its factorization.

505001225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 505001225 is about 22472.2323101200. The cubic root of 505001225 is about 796.3380680816.

The spelling of 505001225 in words is "five hundred five million, one thousand, two hundred twenty-five".