513831425 has 12 divisors (see below), whose sum is σ = 659122620. Its totient is φ = 396889920.

The previous prime is 513831397. The next prime is 513831433. The reversal of 513831425 is 524138315.

It can be written as a sum of positive squares in 6 ways, for example, as 57410929 + 456420496 = 7577^2 + 21364^2 .

It is a de Polignac number, because none of the positive numbers 2^k-513831425 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513831391 and 513831400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353642 + ... + 355091.

It is an arithmetic number, because the mean of its divisors is an integer number (54926885).

Almost surely, 2^513831425 is an apocalyptic number.

It is an amenable number.

513831425 is a deficient number, since it is larger than the sum of its proper divisors (145291195).

513831425 is a wasteful number, since it uses less digits than its factorization.

513831425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708772 (or 708767 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 513831425 is about 22667.8500303844. The cubic root of 513831425 is about 800.9527321140.

It can be divided in two parts, 5138 and 31425, that added together give a palindrome (36563).

The spelling of 513831425 in words is "five hundred thirteen million, eight hundred thirty-one thousand, four hundred twenty-five".