525969 has 6 divisors (see below), whose sum is σ = 759746. Its totient is φ = 350640.

The previous prime is 525961. The next prime is 525979. The reversal of 525969 is 969525.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 7569 = 720^2 + 87^2 .

It is not a de Polignac number, because 525969 - 2³ = 525961 is a prime.

It is a super-2 number, since 2×525969² = 553286777922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525969.

It is not an unprimeable number, because it can be changed into a prime (525961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29212 + ... + 29229.

2⁵²⁵⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

525969 is a deficient number, since it is larger than the sum of its proper divisors (233777).

525969 is a wasteful number, since it uses less digits than its factorization.

525969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58447 (or 58444 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 525969 is about 725.2372025758. The cubic root of 525969 is about 80.7210339353.

Subtracting 525969 from its reverse (969525), we obtain a square (443556 = 666²).

The spelling of 525969 in words is "five hundred twenty-five thousand, nine hundred sixty-nine".