248509025 has 6 divisors (see below), whose sum is σ = 308151222. Its totient is φ = 198807200.

The previous prime is 248509021. The next prime is 248509049. The reversal of 248509025 is 520905842.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5329 + 248503696 = 73^2 + 15764^2 .

It is not a de Polignac number, because 248509025 - 2² = 248509021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (248509021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4970156 + ... + 4970205.

It is an arithmetic number, because the mean of its divisors is an integer number (51358537).

Almost surely, 2^248509025 is an apocalyptic number.

248509025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

248509025 is a deficient number, since it is larger than the sum of its proper divisors (59642197).

248509025 is an equidigital number, since it uses as much as digits as its factorization.

248509025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9940371 (or 9940366 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 248509025 is about 15764.1690234532. The cubic root of 248509025 is about 628.7056865296.

The spelling of 248509025 in words is "two hundred forty-eight million, five hundred nine thousand, twenty-five".