525269 has 4 divisors (see below), whose sum is σ = 527244. Its totient is φ = 523296.

The previous prime is 525257. The next prime is 525299. The reversal of 525269 is 962525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87025 + 438244 = 295^2 + 662^2 .

It is a cyclic number.

It is not a de Polignac number, because 525269 - 2⁴ = 525253 is a prime.

It is a super-2 number, since 2×525269² = 551815044722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (131811).

2⁵²⁵²⁶⁹ is an apocalyptic number.

It is an amenable number.

525269 is a deficient number, since it is larger than the sum of its proper divisors (1975).

525269 is a wasteful number, since it uses less digits than its factorization.

525269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974.

The product of its digits is 5400, while the sum is 29.

The square root of 525269 is about 724.7544411730. The cubic root of 525269 is about 80.6852081171.

The spelling of 525269 in words is "five hundred twenty-five thousand, two hundred sixty-nine".