825245 has 4 divisors (see below), whose sum is σ = 990300. Its totient is φ = 660192.

The previous prime is 825241. The next prime is 825247. The reversal of 825245 is 542528.

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 605284 + 219961 = 778^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 825245 - 2² = 825241 is a prime.

It is an Ulam 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 (825241) 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, 82520 + ... + 82529.

It is an arithmetic number, because the mean of its divisors is an integer number (247575).

2⁸²⁵²⁴⁵ is an apocalyptic number.

It is an amenable number.

825245 is a deficient number, since it is larger than the sum of its proper divisors (165055).

825245 is a wasteful number, since it uses less digits than its factorization.

825245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165054.

The product of its digits is 3200, while the sum is 26.

The square root of 825245 is about 908.4299642790. The cubic root of 825245 is about 93.7981560005.

The spelling of 825245 in words is "eight hundred twenty-five thousand, two hundred forty-five".