525455 has 8 divisors (see below), whose sum is σ = 720672. Its totient is φ = 360288.

The previous prime is 525439. The next prime is 525457. The reversal of 525455 is 554525.

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 525455 - 2⁴ = 525439 is a prime.

It is a super-2 number, since 2×525455² = 552205914050, 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 (525457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7472 + ... + 7541.

It is an arithmetic number, because the mean of its divisors is an integer number (90084).

2⁵²⁵⁴⁵⁵ is an apocalyptic number.

525455 is a deficient number, since it is larger than the sum of its proper divisors (195217).

525455 is a wasteful number, since it uses less digits than its factorization.

525455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15025.

The product of its digits is 5000, while the sum is 26.

The square root of 525455 is about 724.8827491395. The cubic root of 525455 is about 80.6947306523.

The spelling of 525455 in words is "five hundred twenty-five thousand, four hundred fifty-five".