525905 has 8 divisors (see below), whose sum is σ = 637632. Its totient is φ = 416368.

The previous prime is 525893. The next prime is 525913. The reversal of 525905 is 509525.

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 525905 - 2⁸ = 525649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44 + ... + 1026.

It is an arithmetic number, because the mean of its divisors is an integer number (79704).

2⁵²⁵⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

525905 is a deficient number, since it is larger than the sum of its proper divisors (111727).

525905 is a wasteful number, since it uses less digits than its factorization.

525905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 525905 is about 725.1930777386. The cubic root of 525905 is about 80.7177597526.

The spelling of 525905 in words is "five hundred twenty-five thousand, nine hundred five".