245125 has 16 divisors (see below), whose sum is σ = 320112. Its totient is φ = 187200.

The previous prime is 245107. The next prime is 245129. The reversal of 245125 is 521542.

It can be written as a sum of positive squares in 8 ways, for example, as 16641 + 228484 = 129^2 + 478^2 .

It is not a de Polignac number, because 245125 - 2⁷ = 244997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4599 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (20007).

2²⁴⁵¹²⁵ is an apocalyptic number.

245125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

245125 is the 265-th nonagonal number.

It is an amenable number.

245125 is a deficient number, since it is larger than the sum of its proper divisors (74987).

245125 is an equidigital number, since it uses as much as digits as its factorization.

245125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 95 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 245125 is about 495.1009997970. The cubic root of 245125 is about 62.5838873562.

Adding to 245125 its reverse (521542), we get a palindrome (766667).

It can be divided in two parts, 245 and 125, that multiplied together give a square (30625 = 175²).

The spelling of 245125 in words is "two hundred forty-five thousand, one hundred twenty-five".