513540653425 has 24 divisors (see below), whose sum is σ = 647722293120. Its totient is φ = 403838232000.

The previous prime is 513540653377. The next prime is 513540653447. The reversal of 513540653425 is 524356045315.

It is a de Polignac number, because none of the positive numbers 2^k-513540653425 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380617 + ... + 1082566.

It is an arithmetic number, because the mean of its divisors is an integer number (26988428880).

Almost surely, 2^513540653425 is an apocalyptic number.

It is an amenable number.

513540653425 is a deficient number, since it is larger than the sum of its proper divisors (134181639695).

513540653425 is a wasteful number, since it uses less digits than its factorization.

513540653425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463433 (or 1463428 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 513540653425 in words is "five hundred thirteen billion, five hundred forty million, six hundred fifty-three thousand, four hundred twenty-five".