245725 has 6 divisors (see below), whose sum is σ = 304730. Its totient is φ = 196560.

The previous prime is 245723. The next prime is 245741. The reversal of 245725 is 527542.

It can be written as a sum of positive squares in 3 ways, for example, as 54756 + 190969 = 234^2 + 437^2 .

It is not a de Polignac number, because 245725 - 2¹ = 245723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 9829 = 245725 / (2 + 4 + 5 + 7 + 2 + 5).

It is a d-powerful number, because it can be written as 2¹⁶ + 4⁶ + 7⁵ + 5⁶ + 2¹⁶ + 5⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 245725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245723) 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, 4890 + ... + 4939.

2²⁴⁵⁷²⁵ is an apocalyptic number.

245725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245725 is a deficient number, since it is larger than the sum of its proper divisors (59005).

245725 is an equidigital number, since it uses as much as digits as its factorization.

245725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9839 (or 9834 counting only the distinct ones).

The product of its digits is 2800, while the sum is 25.

The square root of 245725 is about 495.7065664282. The cubic root of 245725 is about 62.6349085853.

It can be divided in two parts, 2457 and 25, that multiplied together give a triangular number (61425 = T₃₅₀).

The spelling of 245725 in words is "two hundred forty-five thousand, seven hundred twenty-five".