505111025 has 24 divisors (see below), whose sum is σ = 637250880. Its totient is φ = 397103040.

The previous prime is 505111007. The next prime is 505111031. The reversal of 505111025 is 520111505.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-505111025 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505110988 and 505111006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474644 + ... + 475706.

It is an arithmetic number, because the mean of its divisors is an integer number (26552120).

Almost surely, 2^505111025 is an apocalyptic number.

It is an amenable number.

505111025 is a deficient number, since it is larger than the sum of its proper divisors (132139855).

505111025 is a wasteful number, since it uses less digits than its factorization.

505111025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 505111025 is about 22474.6751923137. The cubic root of 505111025 is about 796.3957785578.

The spelling of 505111025 in words is "five hundred five million, one hundred eleven thousand, twenty-five".