525445 has 8 divisors (see below), whose sum is σ = 663840. Its totient is φ = 398160.

The previous prime is 525439. The next prime is 525457. The reversal of 525445 is 544525.

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

It is not a de Polignac number, because 525445 - 2⁹ = 524933 is a prime.

It is a congruent number.

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, 2671 + ... + 2860.

It is an arithmetic number, because the mean of its divisors is an integer number (82980).

2⁵²⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

525445 is a deficient number, since it is larger than the sum of its proper divisors (138395).

525445 is a wasteful number, since it uses less digits than its factorization.

525445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555.

The product of its digits is 4000, while the sum is 25.

The square root of 525445 is about 724.8758514394. The cubic root of 525445 is about 80.6942187452.

The spelling of 525445 in words is "five hundred twenty-five thousand, four hundred forty-five".