245825 has 6 divisors (see below), whose sum is σ = 304854. Its totient is φ = 196640.

The previous prime is 245821. The next prime is 245849. The reversal of 245825 is 528542.

245825 = 16² + 17² + ... + 90².

245825 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 3 ways, for example, as 16384 + 229441 = 128^2 + 479^2 .

It is not a de Polignac number, because 245825 - 2² = 245821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 245794 and 245803.

It is not an unprimeable number, because it can be changed into a prime (245821) 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, 4892 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (50809).

2²⁴⁵⁸²⁵ is an apocalyptic number.

245825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245825 is a deficient number, since it is larger than the sum of its proper divisors (59029).

245825 is an equidigital number, since it uses as much as digits as its factorization.

245825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843 (or 9838 counting only the distinct ones).

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

The square root of 245825 is about 495.8074222922. The cubic root of 245825 is about 62.6434040462.

The spelling of 245825 in words is "two hundred forty-five thousand, eight hundred twenty-five".