525505 has 8 divisors (see below), whose sum is σ = 634752. Its totient is φ = 417648.

The previous prime is 525493. The next prime is 525517. The reversal of 525505 is 505525.

It is an interprime number because it is at equal distance from previous prime (525493) and next prime (525517).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525505 - 2⁷ = 525377 is a prime.

It is a Duffinian number.

525505 is a lucky number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904 + ... + 1366.

It is an arithmetic number, because the mean of its divisors is an integer number (79344).

2⁵²⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

525505 is a deficient number, since it is larger than the sum of its proper divisors (109247).

525505 is a wasteful number, since it uses less digits than its factorization.

525505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 525505 is about 724.9172366553. The cubic root of 525505 is about 80.6972900904.

The spelling of 525505 in words is "five hundred twenty-five thousand, five hundred five".