245206025 has 12 divisors (see below), whose sum is σ = 306279132. Its totient is φ = 194730240.

The previous prime is 245206019. The next prime is 245206099. The reversal of 245206025 is 520602542.

It can be written as a sum of positive squares in 6 ways, for example, as 4583881 + 240622144 = 2141^2 + 15512^2 .

It is a de Polignac number, because none of the positive numbers 2^k-245206025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245205985 and 245206003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32372 + ... + 39221.

It is an arithmetic number, because the mean of its divisors is an integer number (25523261).

Almost surely, 2^245206025 is an apocalyptic number.

245206025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245206025 is a deficient number, since it is larger than the sum of its proper divisors (61073107).

245206025 is a wasteful number, since it uses less digits than its factorization.

245206025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71740 (or 71735 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 245206025 is about 15659.0556867265. The cubic root of 245206025 is about 625.9078220694.

Adding to 245206025 its reverse (520602542), we get a palindrome (765808567).

The spelling of 245206025 in words is "two hundred forty-five million, two hundred six thousand, twenty-five".