513312225 has 12 divisors (see below), whose sum is σ = 848676336. Its totient is φ = 273766480.

The previous prime is 513312223. The next prime is 513312253. The reversal of 513312225 is 522213315.

It is a happy number.

It is not a de Polignac number, because 513312225 - 2¹ = 513312223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513312195 and 513312204.

It is not an unprimeable number, because it can be changed into a prime (513312223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3422007 + ... + 3422156.

It is an arithmetic number, because the mean of its divisors is an integer number (70723028).

Almost surely, 2^513312225 is an apocalyptic number.

It is an amenable number.

513312225 is a deficient number, since it is larger than the sum of its proper divisors (335364111).

513312225 is a wasteful number, since it uses less digits than its factorization.

513312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844176 (or 6844171 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 513312225 is about 22656.3947926408. The cubic root of 513312225 is about 800.6828674700.

The spelling of 513312225 in words is "five hundred thirteen million, three hundred twelve thousand, two hundred twenty-five".