525389 has 8 divisors (see below), whose sum is σ = 559872. Its totient is φ = 491920.

The previous prime is 525379. The next prime is 525391. The reversal of 525389 is 983525.

It is a happy number.

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 525389 - 2⁴ = 525373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (69984).

2⁵²⁵³⁸⁹ is an apocalyptic number.

It is an amenable number.

525389 is a deficient number, since it is larger than the sum of its proper divisors (34483).

525389 is a wasteful number, since it uses less digits than its factorization.

525389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 10800, while the sum is 32.

The square root of 525389 is about 724.8372231060. The cubic root of 525389 is about 80.6913519455.

The spelling of 525389 in words is "five hundred twenty-five thousand, three hundred eighty-nine".