525069 has 8 divisors (see below), whose sum is σ = 777920. Its totient is φ = 350028.

The previous prime is 525043. The next prime is 525101. The reversal of 525069 is 960525.

It is not a de Polignac number, because 525069 - 2⁷ = 524941 is a prime.

It is a super-2 number, since 2×525069² = 551394909522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 19447 = 525069 / (5 + 2 + 5 + 0 + 6 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525029) 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, 9697 + ... + 9750.

It is an arithmetic number, because the mean of its divisors is an integer number (97240).

2⁵²⁵⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

525069 is a deficient number, since it is larger than the sum of its proper divisors (252851).

525069 is a wasteful number, since it uses less digits than its factorization.

525069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19456 (or 19450 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 525069 is about 724.6164502687. The cubic root of 525069 is about 80.6749663234.

The spelling of 525069 in words is "five hundred twenty-five thousand, sixty-nine".