509245230625 has 10 divisors (see below), whose sum is σ = 636352840970. Its totient is φ = 407396184000.

The previous prime is 509245230619. The next prime is 509245230649. The reversal of 509245230625 is 526032542905.

It can be written as a sum of positive squares in 5 ways, for example, as 150487357329 + 358757873296 = 387927^2 + 598964^2 .

It is not a de Polignac number, because 509245230625 - 2²¹ = 509243133473 is a prime.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 407395560 + ... + 407396809.

It is an arithmetic number, because the mean of its divisors is an integer number (63635284097).

Almost surely, 2^509245230625 is an apocalyptic number.

It is an amenable number.

509245230625 is a deficient number, since it is larger than the sum of its proper divisors (127107610345).

509245230625 is an frugal number, since it uses more digits than its factorization.

509245230625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814792389 (or 814792374 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 509245230625 in words is "five hundred nine billion, two hundred forty-five million, two hundred thirty thousand, six hundred twenty-five".