245342513125 has 20 divisors (see below), whose sum is σ = 306910741500. Its totient is φ = 196062272000.

The previous prime is 245342513033. The next prime is 245342513167. The reversal of 245342513125 is 521315243542.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 176008777156 + 69333735969 = 419534^2 + 263313^2 .

It is a de Polignac number, because none of the positive numbers 2^k-245342513125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 369351 + ... + 791899.

It is an arithmetic number, because the mean of its divisors is an integer number (15345537075).

Almost surely, 2^245342513125 is an apocalyptic number.

245342513125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245342513125 is a deficient number, since it is larger than the sum of its proper divisors (61568228375).

245342513125 is an frugal number, since it uses more digits than its factorization.

245342513125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423498 (or 423483 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

Adding to 245342513125 its reverse (521315243542), we get a palindrome (766657756667).

The spelling of 245342513125 in words is "two hundred forty-five billion, three hundred forty-two million, five hundred thirteen thousand, one hundred twenty-five".