515540363225 has 12 divisors (see below), whose sum is σ = 639284398656. Its totient is φ = 412423033680.

The previous prime is 515540363201. The next prime is 515540363231. The reversal of 515540363225 is 522363045515.

It is not a de Polignac number, because 515540363225 - 2¹⁶ = 515540297689 is a prime.

It is a super-2 number, since 2×515540363225² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1042124 + ... + 1455026.

It is an arithmetic number, because the mean of its divisors is an integer number (53273699888).

Almost surely, 2^515540363225 is an apocalyptic number.

It is an amenable number.

515540363225 is a deficient number, since it is larger than the sum of its proper divisors (123744035431).

515540363225 is a wasteful number, since it uses less digits than its factorization.

515540363225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462856 (or 462851 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 515540363225 in words is "five hundred fifteen billion, five hundred forty million, three hundred sixty-three thousand, two hundred twenty-five".